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Why Use Acetonitrile as the Extraction Solvent during QuEChERS?

Tuesday, September 10, 2019

1. Advantages and disadvantages of commonly used extraction solvents Acetonitrile: easy to salt out; compatible with LC/MS; difficult to concentrate Acetone: not easy to salt out; easy to volatilize, concentrate Ethyl acetate: immiscible with water; less extraction of impurities;...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 272350 Food
Food Grade Carboxymethyl Cellulose 2019

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...

Jining Fortune Biotech Co.,Ltd.

  • 272350 - Jining
  • +86 0537 6106347
China 518107 Equipment goods
Outdoor Waterproof Armored Fiber Patch Cable PDLC to DLC for RRU BBU ZTE

Saturday, August 24, 2019

Description: UnitekFiber produces Outdoor Armored PDLC Waterproof Assemblies. The cable is used for outdoor RRU transmitting optical signal and remote fiber feeder etc. Single mode and multi mode is available for chosen. Our PDLC fiber optical cable are with standard duplex LC connectors...

Shenzhen UnitekFiber Solution Limited

  • 518107 - shenzhen
  • 86 0755 23157590
Choosing the Right QuEChERS Extraction Salt

Saturday, August 24, 2019

If you decide to try QuEChERS, you're going to find that the extraction salt comes in three basic varieties which are the original QuEChERS method, the CEN method and the AOAC method. The original method is sometimes referred to as the unbuffered method. What does that mean? Being...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
A Glance at QuEChERS

Thursday, August 22, 2019

QuEChERS is an extraction method for pesticides in fruits and vegetables. It is also a cleanup method we use to remove sugars, lipids, organic acids, proteins, pigments, and excess water. After the publication of the original QuEChERS method in 2003, QuEChERS has been practiced all...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Silicone Rubber Insulation Product

Saturday, August 17, 2019

Quantity : 500kg

The Characteristics of silicone electrical insulation Product 1. Heat and Cold Resistance Since silicone rubber has high bond energy and good chemical stability, its heat resistance is better than that of organic polymers. Furthermore, since the intermolecular interaction force is weak...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
Multifunctional Insulator Cleaning Agent RS-10

Saturday, August 17, 2019

Quantity : 500kg

Multifunctional Insulator Cleaning Agent (RS-10) is mainly used for eradicating dirt, dust and contaminations on surface of the power equipment, especially clean that which surface was heavily polluted. After cleaning, RS-10 can significantly enhance the adhesion between the RTV coatings...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
High Voltage Insulator Coating Series

Saturday, August 17, 2019

Quantity : 500kg

High Voltage Insulator Coating (HVIC) is used on excessive voltage insulators to forestall flashover and arcing, particular in severely contaminated environments. Following the following 2 tips, you will get good results: Clean all surfaces of dust, grease and wax & Check temperature...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
Enhanced Anti-pollution Flashover Coating RTV-II

Saturday, August 17, 2019

Quantity : 500kg

A functional insulator coating to protect insulators in pollution area, such as industrial area, coastal area and other extreme environmental conditions, also can be used in normal environmental conditions. RTV-II/ PRTV is a one part and new type Room Temperature Vulcanizing RTV silicone...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
Busbar Insulation Coating

Saturday, August 17, 2019

Quantity : 500kg

The silicone rubber insulation coating is made from special silicone rubber, high-performance material and other polymers by polymer blending technology. Its basic structural unit is silicon - oxygen chain while its side chain is connected by silicone with another organic radical group...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
Anti-Algae & Anti-Fouling Coating

Saturday, August 17, 2019

Quantity : 500kg

Leveraging upon our experience, we have become a prominent Anti-Algae & Anti-Fouling Coatings (RTV-ZB) Manufacturer, Exporter and Supplier in China and rest of the world. Applicable for flash-over & algae prevention, our well-formulated anti algae coating and anti fouling...

Fujian Ruisen New Materials Co., Ltd.

  • 364400 - zhangping
  • 0597 3271526
Sugar & Salt Bags

Friday, August 16, 2019

Quantity : 40HQ - Price : 0.09-0.40USD/PC

Sugar bags and salt bags, especially for bulk sugar package and big bag of salt, polypropylene acts as ideal packaging material when regarding of costing and long time serviceable. Colored woven polypropylene bags or striped colored pp woven bags are frequently taken as sugar&salt bags...

Morn Packaging Co.,ltd

  • 325806 - Zhejiang
  • +57 7 68 80 51 63
The Principle and Cleaning Method of NH2 HPLC Columns

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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 272350 Food
Food Grade Carboxymethyl Cellulose

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...

Jining Fortune Biotech Co.,Ltd.

  • 272350 - Jining
  • +86 0537 6106347
China 518103 Equipment goods
Hard Gold PCB

Saturday, August 10, 2019

Quantity : Proofing b - Price : 200-1500CNY

Hard Gold PCB, immersion gold pcb, is to immerse the board in the plating tank and apply current to form a nickel-gold coating on the copper foil surface of the board. The electro-nickel gold is characterized by high hardness, wear resistance and oxidation resistance. Widely used in applications...

Shenzhen Huhe Circuits Co.,Ltd.

  • 518103 - Fuyong Street
  • +15 9 76 88 36 32
China 272350 Food
Oil Drilling Grade Carboxymethyl Cellulose & PAC

Friday, August 09, 2019

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

Description of cmc oil drilling grade cmc oil cmc drilling cmc hv & PAC CMC & polyanionic cellulose pac polyanionic cellulose can be used as fluid loss reducer or viscosifier in drilling fluids. The function of CMC is to reduce the fluid loss as much as possible through forming...

Jining Fortune Biotech Co.,Ltd.

  • 272350 - Jining
  • +86 0537 6106347
Overview Of Bottle-Top Dispenser

Friday, August 09, 2019

What is the bottle-top dispenser? During a scientific experiment, a bottle-top dispenser can indicate its excellent precision and high-repetition of separating operation without wasting solvents. While handling with some corrosive liquids or solvents, it provides safety assurance...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 450000 Construction goods
Diethanolamine manufacturers

Tuesday, August 06, 2019

Quantity : 100000TM - Price : 50USD

Uses of Diethanolamine Diethanolamine similar to triethanolamine (T775580) is used as a surfactant. It also has the potential to be a corrosion inhibitor by means of chemisorption. Definition of Diethanolamine ChEBI: A member of the class of ethanolamines that is ethanolamine having...

HENAN PROSPER CHEM CO.,LTD

  • 450000 - zhengzhou
  • 0371 56753356
Operating Steps Of Bottle-Top Dispenser

Monday, August 05, 2019

Bottle-top dispenser, also known as a bottle-top distributor and bottle-top pipette, is an instrument for accurately measuring liquid chemicals. Hawach Bottle-top separator is suitable for general acid and alkali, low concentration strong acid and alkali and salts. The specific steps...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
What Causes Pollution Of HPLC Column?

Friday, August 02, 2019

Usually, the sample contains something that is not of interest to the analyst. Salt, lipids, lipid-containing substances, humic acid, hydrophobic proteins, and other biological substances are some substances that may interact with the HPLC column in use. These substances have less...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Bottle-Top Dispensers Features And Tips

Thursday, August 01, 2019

Hawach bottle-top dispensers help to simplify the routine liquid transfer operation and are widely used in all kinds of liquid reagents – buffer solution, medium, vitamin solution, acid, alkali, salt solution or a variety of polar solution. Bottle-top dispensers can meet the needs...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
How to Prevent the HPLC Column Failure

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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Use of Microporous Membrane

Monday, July 15, 2019

Laboratory workers use a membrane to filter two phases. Actually, the membrane is a kind of media. According to different aperture sizes, filter membranes can be divided into the microporous membrane, ultrafiltration membrane, nanofiltration membrane a nd reverse osmosis membranes...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Introduction of QuEChERS

Friday, July 12, 2019

Characteristics of QuEChERS QuEChERS is a pretreatment method for pesticide residue detection. This paper refers to the products produced by our company. Its name comes from the acronyms of the words “Quick, Easy, Cheap, Effective, Rugged, Safe”, which are also the characteristics...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Pretreatment for Pesticide Residue Detection – QuEChERS

Friday, July 12, 2019

Today, Hawach want to talk about the pre-treatment process for pesticide residue detection from the perspective of food safety – QuEChERS, and also tell you how to pre-treat pesticide residue food. Introduction The present analytical methods and determining techniques, pre-treatment...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Characteristics Of Hawach Flash Columns

Thursday, July 11, 2019

The formation of a flash phenomenon The boiling point of water is higher than 100℃ when the water is heated under a certain pressure. The higher the pressure, the higher the boiling point of water and the higher the heat content. When the pressure decreases, some sensible heat is released...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Characteristics Of Hawach Flash Columns

Thursday, July 11, 2019

The formation of a flash phenomenon The boiling point of water is higher than 100℃ when the water is heated under a certain pressure. The higher the pressure, the higher the boiling point of water and the higher the heat content. When the pressure decreases, some sensible heat is released...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Comparison Between SPE/FLASH and HPLC Column

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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
QuEChERS Methods

Wednesday, July 10, 2019

According to the research from the United States Department of Agriculture, the QuEChERS meth od which extracts pesticide from foods is fast, convenient, cheap, effective and secure. When it compares to the traditional SPE method, QuEChERS not only uses less solvent but also adopts...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Product Composition of QuEChERS

Friday, July 05, 2019

The product mainly includes two parts: extraction boxes and purification boxes. Extraction boxes include salt bags and 50 ml centrifugal tubes. Due to the high transportation cost of 50 ml centrifugal tubes and the general unacceptability of customer laboratories, more customers will...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
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