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Tuesday, January 14, 2020

The sample shall be dissolved as much as possible in solvents that are mutually soluble with the mobile phase. Except for special designation, the resolution of the sample HPLC column may be reduced if it is dissolved using a strong solvent. Besides, the sample solution shall be pre-filtered...

Thursday, January 09, 2020

Having corresponding serial numbers, state code, manufacturer code by ICAO and product code printed on the bag, FQ Packaging manufacture high-quality standard steb bags for customers purchasing at airport duty-free shop or on board aircraft. FENGQI secure tamper evident bag steb can...

Thursday, January 09, 2020

As a qualified member of international civil aviation organization (ICAO), FQ Packaging China have the right to offer customers worldwide customized duty-free steb bags in eight colors and photos printable. Detailed information listed below with word description and picture demonstration...

Wednesday, January 08, 2020

Price : 800€

Hello everyone, Grand Destocking. Sale of household products: -Laundry detergent, -softener, -dishwashing liquid, -products for floors -shower gel -shampoo -hands Sale in lots. Attractive price anywhere else (packaging in 5 liter cans or 1000 liter cans for export) Wide choice of...

Wednesday, January 08, 2020

With the full line of different sizes, Hawach always provides you the high purity stationary phased packed flash column. And the column cartridge made from medical grade virgin PP and PE materials and different stationary phases prepacked will help you to meet a variety of compounds...

Friday, January 03, 2020

Quantity : 100000PCS - Price : USD0.1~3.00

The basic function of plastic cap is to seal and prevent leakage. However, as the daily cosmetics products tend to be diversified, the requirements for plastic cap are getting higher and higher, not only good sealing but also beautiful design. Products Description Taking perfume cap for example...

Wednesday, January 01, 2020

Quantity : 500 - Price : $300

1,for industrial and agricultural production 2,active ammonia eliminate, antibacterial, inhibition effect Yellow Beeswax in agricultural production in a wide range of applications. In the cosmetics industry, lots of beauty products contain beeswax, such as lipstick, shower gel, rouge, etc...

Wednesday, December 25, 2019

Quantity : 5000SET - Price : 0.4-4

Hotel Amenity Set： With many years experience in the design, manufacture, and sales of hotel supplies product, Yangzhou YILANMEI Hotel Supplies Limited Company is considered as the professional hotel amenities manufacturer. We provide the satisfied hotel amenities service at the preferable price...

Monday, December 16, 2019

The capacity of the SPE cartridge refers to the adsorption amount of the SPE cartridge packing. For silica-based SPE cartridge, the capacity is generally 1 to 5 mg/100 mg, that is, the cartridge capacity is 1%~5% of the mass of the packing. The capacity of the bonded silica ion exchange...

Friday, December 13, 2019

FLASH column is a sample pretreatment technology developed by the combination of liquid-solid extraction and column liquid chromatography. It is mainly used for sample separation, purification and concentration which has been widely used in medicine, food, environment, commodity inspection...

Thursday, December 12, 2019

As a unique chromatography technique that pushes solvent through the column uses by compressed gas or a pump, flash column chromatography is highly appreciated as an advance technique because it makes flow rates of the solvent much faster than the gravity flow. Developed in the 1970's...

Wednesday, December 11, 2019

The HPLC reversed-phase column is made of high-purity and high-strength silica gel by using advanced bonding technology. It has a high surface bonding rate and good peak shape for alkaline and acidic compounds. With a high column capacity and long service life, it is the one for the...

Wednesday, December 04, 2019

Dongjin Gel series battery is manufactured with special separator and colloidal or foamed silica. The batteries use silica gel to immobilize the electrolyte inside the battery. The proven silica gel technology improves battery cycle life and performance at cold ambient temperatures...

Tuesday, December 03, 2019

Quantity : 800pcs - Price : 3-50usd

The feature of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier 1. Modeling exquisite, the button is obvious, easy to operate; 2. Open fit hearing aid can change the ear tube as you need, comfortable wear; 3. Corresponding uncomfortable threshold...

Tuesday, December 03, 2019

Quantity : 800pcs - Price : 3-50usd

Features of JH-907 ITE Mini Ear Amplifier 1. The lightweight and easy operation, you won't feel anything after you wear, very comfortable; 2. Corresponding uncomfortable threshold properly adjust the maximum output, protect ear， low distortion; 3. 3 different earplugs are provided...

Tuesday, December 03, 2019

Quantity : 800pcs - Price : 3-50USD

The feature of JH-D16 Digital 4 Modes BTE Open Fit Hearing Aid Hearing Amplifier 1.Ear zoom hearing aid Bluetooth appearance makes comfortable wear and fashionable look. 1. Ear zoom Bluetooth appearance, makes comfortable wear and fashionable look, the machine looks like a Bluetooth...

Tuesday, December 03, 2019

Quantity : 800pcs - Price : 3-50USD

Features of JH-113 Analog BTE Hearing Aid Hearing Amplifier 1. Behind the ear style hearing aid amplifier, easy to wear and comfortable wearing feeling in either ear; 2. Volume control key, on/ off switch, very simple design and easy operation, suitable for all people; 3.Good sound quality...

Wednesday, November 20, 2019

Quantity : 2000 tons

FEATURES OF GOLOHO-2752 GOLOHO-2741 is a high performance RTV thermal conductivity of silicone sealant · Excellent thermal conductive, heat dissipation and adhesion ·Small power heater can be directly bonded on the radiator without tighten the firmware again to avoid the short circuit...

Sunday, November 17, 2019

Quantity : 18000 L - Price : 4,00 HT

Liquidation liquide vaisselle de grande marque direct usine parfums fruits rouge ,orange,alloe verra ... .conditionner en bidons de 5litres prix 4,00e/HT/BIBON commande minimum de 128 bidons (une palette) soit 512e/HT Tarif degressif en fonction des commandes nous proposons d'autres...

Saturday, November 16, 2019

Quantity : 8000kgs - Price : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond micro powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. The lapping and polishing efficiency of the detonation-synthesized polycrystalline...

Thursday, November 07, 2019

Quantity : 100 - Price : 0.2-5.9USD

Forefoot Cushion ZG-414 EFFECTIVE - Ball of Foot Cushions Pain Relief Kit was designed to help relieve a variety of foot issues including Metatarsalgia, Bursitis, Morton's neuroma, hammertoe deformity, ankle pain, painful aches, tendonitis and diabetic foot pain. ALL DAY COMFORT...

Thursday, November 07, 2019

Quantity : 100 - Price : 0.2-5.9USD

Best solution for all kinds of foot disease: gel foot sleeves, to provide metatarsal joint padding and protection from blisters. Forefoot pain can be caused by many different disorders. The most common condition is metatarsalgia, a painful disorder associated with the metatarsal...

Thursday, November 07, 2019

Quantity : 100 - Price : 0.2-5.9USD

BEST MOISTURIZING SPA GEL SOCKS: The foot spa gel socks provide intensive hydration treatment to moisturizes and softens hard, dry, rough, cracked feet, toes and heels skins. The outer layer of the moisturizing gel sock is made of ultra-fine fluff to make the skin feel soft. The...

Thursday, November 07, 2019

Quantity : 100 - Price : 0.2-5.9USD

A multi-functional correction pads for flat foot, strephexopodia, X-type legs and pigeon toe. Cushioned orthotic arch support pads are efficient Pads to relieve pain and pressure related to Plantar Fasciitis, tendonitis, arthritis, high arch and a variety of Arch problems. Effective...

Wednesday, November 06, 2019

Quantity : 100000pcs/ - Price : 1.5~4800 USD

Dongjin Gel series battery is manufactured with special separator and colloidal or foamed silica. The batteries use silica gel to immobilize the electrolyte inside the battery. The proven silica gel technology improves battery cycle life and performance at cold ambient temperatures...

Friday, November 01, 2019

Quantity : 100000pcs/ - Price : 1.5~4800 USD

Dongjin valve-regulated lead-acid battery (VRLA battery ) is also called sealed lead-acid (SLA) or maintenance free battery or valve regulated rechargeable battery. There are 2 types of VRLA batteries from Dongjin Group: absorbent glass mat (AGM) and gel cell. The gel batteries and...

Tuesday, October 29, 2019

Quantity : 25kg - Price : FOB Qingdao 2.4-2.9$

CARBOXYMETHYL CELLULOSE Send Enquiry Sodium carboxymethyl cellulose (Na CMC or cellulose gum) is the most widely used and most frequently used type of anionic cellulose ether. It is a white fibrous or granulated powder. Odorless, tasteless, non-toxic, hygroscopic, easily soluble in...

Tuesday, October 29, 2019

Quantity : 25kg - Price : FOB Qingdao 2.4-2.9$

What is cmc in food Description of Food Grade CMC Sodium carboxymethyl cellulose (CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of e466...

Tuesday, October 29, 2019

Quantity : 200pcs - Price : best offer

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Tuesday, October 29, 2019

Quantity : 200pcs at - Price : best offer

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Tuesday, October 29, 2019

Quantity : 200pcs at - Price : best offer

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Tuesday, October 29, 2019

Quantity : 200pcs - Price : best offer

Qingdao Tianwei Casting (situé à Qingdao, dans le Shandong, en Chine) est très spécialisé dans le moulage de précision, le moulage de précision et le moulage en sable pour la production de tous types de pièces d'ingénierie et de pièces métalliques. Nous pouvons couler plus de 100...

Saturday, October 26, 2019

Quantity : 8000kgs - Price : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. The lapping and polishing efficiency of the detonation-synthesized polycrystalline diamond...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Wednesday, October 23, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Tuesday, October 22, 2019

Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting(lost-wax casting method),we...

Friday, October 18, 2019

The vapor permeability of leather is evaluated by means of measuring the weight of water-vapor that permeates to specimen per unit time and per unit area. The main functional components includes: testing holder clamp, ventilation fan, control panel with functions of switch, time setting...

Sunday, October 13, 2019

Quantity : 8000PCS - Price : 3-50USD

Specification of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier Max Sound Output 130±3dB Sound Gain 40±5dB Total Harmonic Wave Distortion 500HZ<3%</span> 800HZ<5%</span> 1600HZ<1%</span> Operation Current/mA...

Sunday, October 13, 2019

Quantity : 8000PCS - Price : 3-50USD

Specification of JH-907 ITE Mini Hearing Aid Hearing Amplifier Max Sound Output 120 ± 5dB Voltage 1.5V Sound Gain ≥35dB/28 Battery size A10 Total Harmonic Wave Distortion ≤5% Battery capacity/Mah 100 Operation Current ≤6mA Operation current/mA 3.5 Frequency...

Saturday, October 12, 2019

Quantity : 8000kgs - Price : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond micro-powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. Monocrystalline vs polycrystalline diamond：The lapping and polishing efficiency of...

Saturday, October 12, 2019

Quantity : 2000 tons

SPECIAL FEATURES OF GOLOHO-324C-AB 1: 1 Two-part, 1: 1 mix ratio Low viscosity Room temperature accelerated cure, no small molecule release Suitable working time at room temperature Excellent adhesion and self-healing Excellent stability at 200℃ high temperature GOLOHO-324C is a two...

Saturday, October 12, 2019

The stationary phase, commonly known as the fillers, is the most central part of chromatography. People need to determine three aspects of stationary phase information in turn before determine how to select the kind of the stationary phase of the flash purification column. They are matrix type...

Thursday, October 10, 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Wednesday, October 09, 2019

Flash column chromatography is an easy and fast method to separate the complex mixtures. It can not only make the separation effect better but also shorten the time. How to put the sample into the flash column is of high importance in the preparation process of flash column chromatography...

Wednesday, October 09, 2019

Solid phase extraction (SPE) is used to reduce sample matrix interference and improve detection sensitivity. The separation selectivity of the solid phase depends on the retention strength of the components that can be retained, so the selection of the solid phase will depend on the...

Tuesday, October 08, 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Monday, September 30, 2019

Gel Heel Cushions for Shoes, Foam Heel & Metatarsal Pads, Leather Heel Cushions, Heel Grips, and Gel Ball of Foot Cushions. Designed to help absorb impact and give cushioning comfort for the heel, metatarsal pad, arch, or fore-foot. HEEL PAIN KILLER: Gel liners protect and support...

Monday, September 30, 2019

Best solution for all kinds of foot disease: gel foot sleeves, to provide metatarsal joint padding and protection from blisters. Forefoot pain can be caused by many different disorders. The most common condition is metatarsalgia, a painful disorder associated with the metatarsal (ball...)

Monday, September 30, 2019

BEST MOISTURIZING SPA GEL SOCKS: The soft socks provide intensive hydration treatment to moisturizes and softens hard, dry, rough, cracked feet, toes and heels skins. The outer layer of the moisturizing gel sock is made of ultra-fine fluff to make the skin feel soft. The inner layer...

Monday, September 30, 2019

A multi-functional correction pads for flat foot, strephexopodia, X-type legs and pigeon toe. Arch Support Cushions are efficient Pads to relieve pain and pressure related to Plantar Fasciitis, tendonitis, arthritis, high arch and a variety of Arch problems. Effective correction pads...

Monday, September 30, 2019

Quantity : 25kg - Price : FOB Qingdao 2.4-2.9$

What is cmc in food ？ Description of Food Grade CMC Carboxymethyl cellulose cmc(CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of CMC...

Monday, September 30, 2019

HPLC columns are widely used in many fields, whose column efficiency, capacity, permeability characteristics, and service life are very important. After using for a period of time, there will be changes such as column pressure increase, column efficiency decrease, etc. If no measures are taken...

Saturday, September 28, 2019

Depending on the packing of the HPLC column. The following column types are available on the market: 1. Silica gel HPLC column: Silica gel is the earliest chromatographic column packing used in liquid chromatography. It has a wide range of applications. However, it can only be used...

Friday, September 27, 2019

Reliable flash columns play a decisive role in a good chromatographic separation method, which ensures complete separation of valuable compounds and specific impurities. Choosing the right flash column is the most critical part of the purification process. There are two aspects should...

Thursday, September 26, 2019

Quantity : 2000Ton - Price : 6~60 usd/KG

SPECIAL FEATURES OF GOLOHO-324C-AB 1: 1 Two-part, 1: 1 mix ratio Low viscosity Room temperature accelerated cure, no small molecule release Suitable working time at room temperature Excellent adhesion and self-healing Excellent stability at 200℃ high temperature Description of the...

Thursday, September 26, 2019

Quantity : 2000Ton - Price : 6~60 usd/KG

Are you looking for RTV silicone thermal conductivity? FEATURES OF GOLOHO-2752 GOLOHO-2741 is a high performance thermally conductive RTV silicone adhesive · Excellent thermal conductive, heat dissipation and adhesion ·Small power heater can be directly bonded on the radiator without...

Thursday, September 26, 2019

Quantity : 2000Ton - Price : 6~60 usd/KG

FEATURES OF HEAT RESISTANT RTV SILICONE GLUE GOLOHO-2402W GOLOHO-2491 is a high-performance heat resistant RTV silicone glue for electronics. ·Convenient to use: one part, rapid curing at room temperature,deal coholization ·Neutral,non-corrosive to various metals. Excellent bonding...

Thursday, September 26, 2019

- Reversed-Phase Principle - The reversed-phase filler is a kindly of nonpolar filler such as C4, C8, C18 aliphatic chain which is bonded on the silica gel. Nonpolar or hydrophobic compounds are strongly reserved, while polar samples are weakly reserved and go through the flash reversed-phase...

Wednesday, September 25, 2019

General requirements for adsorbents: large surface area and certain adsorption capacity. Does not chemically change with the developing agent, does not react with or catalyze, decompose or associate with the substance to be separated, and the particles are uniform. Silica gel and...

Wednesday, September 25, 2019

Quantity : 1-200ton - Price : 10usd

We offer different kinds of Station Post Insulator for Substation, such as Circuit Breaker (CB), Post Insulator, Disconnector, Potential Transformer (PT), Surge Arrester, etc. Contact us get more details about Station Post Insulator, such as TDS, Application Method, OEM etc. We can...

Tuesday, September 24, 2019

Screw thread top sample vials have excellent chemical stability, sealing and corrosion resistance, and are available in both transparent and amber. The cap of sample vial has a solid lid and a perforated lid, which can be divided into black and blue. This series of products are designed...

Tuesday, September 24, 2019

Suitable for a general flash chromatography method analysis, the flash column chromatography is the method of isolating a component from a mixture and purify it as well. Different from the old method: long column chromatography technology, flash column chromatography can separate...

Monday, September 23, 2019

Let's take a look at two common adsorbents for adsorption chromatography. Polyamide The polyamide adsorbent can be divided into nylon 6 (polycaprolactam) and nylon 66 (polyhexamethylene adipamide), which are hydrogen bond adsorption and semi-chemical adsorption. There are many amide...

Friday, September 20, 2019

Silica matrix HPLC columns are generally compatible, but organic polymer matrix columns may expand or contract in some solvent combinations, which will affect their chromatographic behavior. Wash each solvent system at least 20 volumes. Because some solvent systems are highly viscous...

Thursday, September 19, 2019

It is a liquid chromatography using a chemically bonded phase as a stationary phase, which is formed by chemically reacting an organic molecule to a surface of a carrier (silica gel) by a covalent bond to form a uniform, firm monolayer thin layer. The separation mechanism is both...

Wednesday, September 18, 2019

Selection of scavengers The conventional QuEChERS method only uses PSA which is too simple single that can no longer meet the complex matrix samples examination experiments. GCB (graphitized carbon black) can effectively adsorb pigments, non-polar interferences such as sterol due...

Wednesday, September 18, 2019

In chromatographic experimental analysis, a device that can quantitatively feed a sample bottle into a chromatographic column is called a sample vial. Sample vials are divided into manual and automatic sample vials. The automatic sample vial is an intelligent and automatic sampling...

Wednesday, September 18, 2019

Hawach SPE Cartridges are made of medical grade PP and forming in one time. Frits are made of UHMW-PE. There is a variety of models to choose, such as Normal Phase Cartridge, Reversed Phase Cartridge, Ion Exchanges Cartridge, Mixed Mode Cartridges and so on. Here, We would like to...

Tuesday, September 17, 2019

Adsorption chromatography uses the difference in adsorption capacity of substances in stationary phase adsorption to achieve separation of the mixture. The chromatographic process of adsorption chromatography is the process in which the mobile phase molecules compete with the material...

Tuesday, September 17, 2019

Quantity : 100000pcs/ - Price : 1.5~4800 USD

Dongjin DG series VRLA Gel Type Battery is specially designed for motive power applications, that is electric tricycles, electric motorcycles and other device require DC power source. Dongjin electric trike batteries adopt international leading technologies to ensure the batteries...

Tuesday, September 17, 2019

Quantity : 100000pcs/ - Price : 1.5~4800 USD

Dongjin Group is one of the most professional EV car battery manufacturers. Dongjin VRLA EV Battery is specially designed for the motive power of electric vehicles other devices require DC power source. EV battery is with long cycle service life, good high rate discharge performance...

Monday, September 16, 2019

Hawach Scientific provides a wide selection of flash columns, they are a quick and easy way to separate complex mixtures of compounds, and often used on a preparative scale to provide better separation and cuts down on the amount of time required to run column. We committed to providing...

Wednesday, September 11, 2019

Quantity : 2500km/wee - Price : <$200

Description: UnitekFiber supply flat drop fiber cable, this cable also can be called as a small span of ADSS fiber cable to apply in a small span of ADSS installation system. The structure of flat drop cable is central loose tube, Kevlar and glass yarn is usually used as reinforcement...

Wednesday, September 11, 2019

Quantity : 1 - Price : 600~3000RMB

PSST explosion-proof telephone is designed to provide safe, reliable voice communication for both indoor and outdoor hazardous areas. featuring a sturdy non-sparking, impact and shock resistant fibreglass-reinforced polyester cast body, silica gel or stainless steel keypad, durable handset...

Wednesday, September 11, 2019

Flash chromatography is one of the methods in the preparation of liquid chromatography and is usually used for the separation of organic compounds. Flash chromatography has the advantages of ease of operation, low cost, and fast analysis. There are few other techniques for purifying...

Wednesday, September 11, 2019

The structure of the SPE cartridge is mainly divided into four parts: column tube, sieve plate, adsorbent and supporting device. The characteristics of each part are briefly introduced below. Column tube: A carrier for the adsorbent, made from serum grade polypropylene. Commonly used...

Tuesday, September 10, 2019

Quantity : 20,000 ton - Price : 2.4-2.9$/kg

Description of Food Grade CMC Sodium carboxymethyl cellulose (CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of CMC is refined cotton and wood pulp...

Tuesday, September 10, 2019

According to the separation mechanism of substances, Chromatography can be divided into adsorption chromatography, distribution chromatography, ion exchange chromatography and the like. The operation mode of the adsorption thin layer chromatography refers to that the adsorption capacity...

Saturday, September 07, 2019

Price : 2.4usd

Description of Food Grade CMC Sodium carboxymethyl cellulose (CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of CMC is refined cotton and wood pulp...

Tuesday, September 03, 2019

Chemical properties of the chromatographic column could affect the performance of the C18 HPLC column. Performance factors of C18 HPLC columns: bonding type Single tooth bonding can improve the mass transfer rate and accelerate column balance. Double tooth bonding can increase the...

Tuesday, September 03, 2019

The basic principle of SPE cartridges is that the liquid sample is made to pass through the adsorbent to retain the tested substance, and then the impurities are washed away with appropriate strength solvent, and then the tested substance is eluted with a small amount of good solvent...

Saturday, August 17, 2019

Quantity : 500kg

We offer different kinds of Station Post Insulator for Substation, such as Circuit Breaker (CB), Post Insulator, Disconnector, Potential Transformer (PT), Surge Arrester, etc. Contact us get more details about Station Post Insulator, such as TDS, Application Method, OEM etc. We can...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-D10 Digital Trimmer 3 Modes Ear Hook Trimmer Hearing Aids Hearing Amplifier - Max Sound Output 128±3dB Voltage D.C.1.4V Sound Gain 57±5dB Battery Type LR44H/A675 Total Harmonic Wave Distortion 500Hz ＜6% 800Hz ＜4% 1600Hz ＜1% Battery capacity/Mah...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier - Max Sound Output 130±3dB Sound Gain 40±5dB Total Harmonic Wave Distortion 500HZ<3%</span> 800HZ<5%</span> 1600HZ<1%</span> Operation Current/mA...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-907 ITE Mini Hearing Aid Hearing Amplifier - Max Sound Output 120 ± 5dB Voltage 1.5V Sound Gain ≥35dB/28 Battery size A10 Total Harmonic Wave Distortion ≤5% Battery capacity/Mah 100 Operation Current ≤6mA Operation current/mA 3.5 Frequency...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-116 Personal Sound Amplifier Behind The Ear Hearing Aid - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB/44 Battery size LR754 Total Harmonic ≤5% Battery capacity/Mah 68 Wave Distortion Operation ≤4mA Operation current/mA 4.5 Current...

Friday, August 16, 2019

NH2 HPLC columns refer to the chromatographic columns that use silica gel as matrix carrier to bond amino groups. They are usually used for the analysis of carbohydrate compounds, and the mobile phase is usually methanol, acetonitrile and buffers salt solution. - The cleaning method...

Friday, August 16, 2019

- Category - In terms of the filler type, SPE column can be divided into four applications of silicone bonding matrix, polymer matrix, absorption matrix and specialized columns. Besides, the silicone bonding has four sorts—antiphase(C18 sealing end/uncapped/hydrophile, C8), positive...

Thursday, August 15, 2019

The similarities FLASH and SPE are all column chromatography separation technology. FLASH is a fast separation mode for preparative chromatography, using optimized pre-packed low and medium pressure columns for chromatographic separation. The separation mechanism, stationary phase...

Wednesday, August 14, 2019

Quantity : 25kg - Price : FOB Qingdao 2.4-2.9$

Description of Food Grade CMC Sodium carboxymethyl cellulose (CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of CMC is refined cotton and wood pulp...

Wednesday, August 14, 2019

Flash column chromatography is an alternative to long column chromatography developed in 1978. This method aims to separate the components from the mixture and thereby purify it. It is built from existing long column chromatography techniques and is time-consuming and often unsatisfactory...

Wednesday, August 14, 2019

Physical properties of the chromatographic column could affect the performance of C18 HPLC columns. - Performance factors of C18 HPLC columns: - Silica gel purity Class A silica gel has high residual silica hydroxyl with a negative charge and high metal content on the acidic surface...

Tuesday, August 13, 2019

Laboratory vacuum filtration equipment is specially designed for laboratory workers to maintain solid-liquid separation of liquid samples. Operation Procedures of Diaphragm Vacuum Pump 1. Put the glass filter flask on the stainless steel workbench, and insert the silica gel plug of...

Monday, August 12, 2019

The rapid chromatographic method is a technology widely used in the separation and purification of active target compounds, such as organic compounds, natural products, and biological macromolecules. Rapid chromatographic method has the advantages of easy-operation, low-price, and fast-analysis...

Friday, August 09, 2019

Dongjin OPzS Tubular Flooded and maintenance-free OPzV Tubular Gel batteries provide proven performance and reliability in the most demanding renewable, stationary and deep cycle telecom applications. The OPzS and OPzV batteries feature tubular grids and multi-tube gauntlets that...

Friday, August 09, 2019

A gel battery (also known as a "gel cell") is a VRLA battery with a gelified electrolyte; the sulfuric acid is mixed with fumed silica, which makes the resulting mass gel-like and immobile. Gel batteries reduce the electrolyte evaporation, spillage, subsequent corrosion problems and...

Thursday, August 08, 2019

Flash columns adopt high-capacity silica gel for precise filling, which has very excellent separation and purification performance. The specific surface area of high-capacity spherical silica gel is 40% higher than that of ordinary spherical silica gel, and the sample loading is twice...

Thursday, August 08, 2019

Most common SPE cartridges are injection syringes made of polyethylene, in which there are two plugs made of polypropylene or fiberglass, with a certain amount of chromatographic adsorbent (filler) between the two plugs. SPE cartridges without sieve plate 1. Avoid “non-specific adsorption” 2...

Monday, August 05, 2019

One of the main factors affecting the life of the liquid chromatographic column is the mobile phase. There are three aspects of the mobile phase factors. The pH value of the Mobile Phase The fillers of different substrates apply to different pH value range. Under normal temperature...

Saturday, August 03, 2019

SPE cartridge can be divided into three classes on the markets: silica-based cartridges, polymer-based cartridges, and adsorption-based cartridges. And here we talk about the three types of silica-based cartridges. The first type is the C18 cartridges. This kind of cartridges bond...

Friday, August 02, 2019

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Friday, August 02, 2019

Flash column pressure has something to do with the form of silica gel, the mesh number, the synthesis condition of filler, the condition of column packing, the mobile phase, and the temperature when analyzing. Different manufacturers' new flash columns, their column pressures may...

Thursday, August 01, 2019

There are two different cases of retention time: retention time drift and retention time fluctuations. The former means that the retention time changes only in one direction, while the latter refers to the fluctuation of the retention time without a fixed law. It is often helpful...

Wednesday, July 31, 2019

- The Selection Principle of Silica Gel Column - Commonly, the maximum sample loading volume of a silica gel column is about 1/20 of the volume of the column's silica gel. However, as a practical matter, specific sample loading volume should be decided by each constituent's degree...

Tuesday, July 30, 2019

The improper use of chromatographic columns will make the columns decrease or lose effectiveness. Generally speaking, the columns always have problems at the end of them. If we can install a short column with the same stationary phase as the analysis column in front of analysis column...

Thursday, July 25, 2019

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Tuesday, July 23, 2019

The white csa cements is a hydraulic binder based on calcium sulfoaluminate, specially designed to be blended with anhydrite and some other materials such as sand, crashed stone, pigments to make artificial stone and countertops. The white csa cements is manufactured under a strict...

Friday, July 19, 2019

Bonded-phase chromatography is a liquid-liquid chromatography method in which a stationary phase is covalently bound to a carrier particle, which overcomes the mechanical shock in the distribution chromatography, the constant loss of the stationary phase and the gradual change of...

Monday, July 15, 2019

Laboratory data show that the optimum flow rate of silica gel flash columns is decided by the length and width of columns and the property of gel. To be more specific, longer and narrower columns will provide more theoretical plates which are able to affect the flow rate. When referring...

Monday, July 15, 2019

All the technique cores of HPLC from Hawach Scientific are focused on the characteristics of the chromatogram column. Quality Recognition This is shown as the fact that terminal customers have published more than 500 papers on those journals at home and abroad. For famous oversea journals...

Thursday, July 11, 2019

Columns Ahead Statement Generally speaking, SPE/FLASH is mainly applied to the pretreatment of samples. People can easily perceive that SPE/FLASH columns separate salt and sugar, while HPLC ones can make glucose, maltose and sucrose apart from the sugar solution, which posses more...

Thursday, July 11, 2019

SPE column or SPE cartridges are based on liquid-solid phase chromatography theory, it is a kind of extraction, separation, concentrated sample preparation unit. Mainly used in sample pretreatment of various foods, agricultural and livestock products, environmental samples and target...

Wednesday, July 10, 2019

automatic donut cutter machine-Yufeng Table cut donuts are the industry standard, providing the highest product quality. It works with cutter mold, there are stainless steel, aluminium alloy, silica gel 3 material to meet your require. Different shape and size, also welcome to customized...

Tuesday, July 09, 2019

Rapid chromatography Technology for the separation and purification of natural products and biological macromolecules. It has the advantages of easy operation, cheap price, and rapid analysis, and a few other technologies can match the rapid chromatography in the application of purifying...

Monday, July 08, 2019

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Monday, July 08, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Sunday, July 07, 2019

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Sunday, July 07, 2019

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Sunday, July 07, 2019

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Sunday, July 07, 2019

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Friday, July 05, 2019

When the polarity of the stationary phase is greater than the polarity of the mobile phase, it can be called normal phase partition chromatography or simply normal phase chromatography. If the polarity of the stationary phase is less than the polarity of the mobile phase, it can be...

Thursday, July 04, 2019

C8 HPLC columns are used to isolate many organic compounds, which are one of the reversed phase silica gel columns. The maintenance of C8 HPLC columns requires organic solvents. Chromatographic grade methanol is recommended and different brands of chromatographic columns should be...

Thursday, July 04, 2019

The filler of polymeric HLB SPE cartridges produced by a special copolymerization technology contains a certain proportion of the hydrophilic group and the hydrophobic group. Hydrophobic divinyl benzene structures retain nonpolar compounds and hydrophilic n-vinyl pyrrolidone structures...

Thursday, July 04, 2019

Flash column chromatography method is to separate the constituents from the mixture and thus purify it. In a word, flash column chromatography makes the samples go through the column which is filled with gel to achieve separation. In the beginning, the founder of flash column chromatography, Mr...

Wednesday, July 03, 2019

Flash column chromatography is an efficient way to separate complex mixtures of compounds in the lab. we use compressed air to push the solvent through the column when we are running flash columns. It can help provide better separation and cut down the running time as while. Flash...

Tuesday, July 02, 2019

The average sample addition recovery rate of QuEChERS method is higher than 85%, with fewer impurities interfering with the detection of the target substance, a small amount of solvent, simple and fast operation, which will be the preferred pretreatment method for routine detection...

Tuesday, July 02, 2019

The key to regenerating contaminated HPLC columns is to know the nature of the contaminants and to find the right solvent to remove. If contamination is caused by the accumulation of strongly retained materials during repeated injections, simple steps to remove these contaminants...

Monday, July 01, 2019

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Monday, July 01, 2019

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Monday, July 01, 2019

The aim of flash column chromatography is to separate components from the mixture and purify it. Briefly, flash column chromatography allows samples to be separated through columns filled with gels. Flash column chromatography has been widely used in organic chemistry since its inception...

Friday, June 28, 2019

Stationary Phase & Mobile Phase The stationary phase is used to separate the substances, which is packed into HPLC Column directly; Mobile phase is the carrier, which carries the substances into the stationary phase and goes through the stationary phase. It is gas in the vapor phase...

Wednesday, June 19, 2019

The most important process of the whole purification is selecting the most suitable Flash column. And now we will talk about the key content of the column: stationary phase. Stationary phase, commonly known as filler, is the most central part of chromatography. When we choose the...

Monday, June 17, 2019

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Saturday, June 15, 2019

What is SPE Cartridge? The term SPE cartridges is short for Solid Phase Extraction cartridge. It is a kind of sample preprocessing equipment (extract, separate and concentrate) which is developed from the chromatographic column. SPE cartridge is mainly used for preprocessing of the...

Friday, June 14, 2019

Quantity : 1000 - Price : 72,99 €

- LE MATELAS PARFAIT: le matelas parfait pour toutes exigences de repos et de poids. Il se compose de trois couches en mousse de très haute qualité ( mousse à froid + mousse Visco Smart (memory 2.0) + Mousse gel). Ces couches permettent un confort idéal car elles s'adaptent à notre...

Friday, June 14, 2019

Quantity : 1000 - Price : 1 000,00 €

Huatai Industrial (Hong Kong) Co., Ltd. is a professional manufacturer of all kinds of rubber seals, cylinders, cylinder seals, mechanical seals, rubber molds, hardware and other products. Our products use imported rubber compounds, such as NBR-JSR-BAYER, EP35 / EP48 EPDM rubber,...

Friday, June 14, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...