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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 silicon hydroxyl group with strongly polar on the surface of glass sample vials will adsorb the samples. Based on such reasons, people produce hydrophobic glass surface through silylating the sample vials in order to eliminate the adsorption of the sample vials, which is widely...

Thursday, July 04, 2019

(1) When loading and unloading or replacing the HPLC columns, the action should be light and the joint should be tightened properly. Strong mechanical vibration must be prevented to avoid voids in the bed. (2) If the instrument is used for routine analysis, the sample type is limited...

Wednesday, July 03, 2019

The FILTSTAR series syringe filter is extremely low HPLC extractable and specially designed to support the filtration of viscous samples, hard-to-filter samples which with high solids content. Medical PP housing with imported membrane filter media helps to guarantee the filter cleanness...

Tuesday, July 02, 2019

In this article, we want to clarify the syringe filter. Each of the different syringe filters is applied to the specific product Which the various syringe filter is worth seeing more and what are the right steps and methods to have a try. Classification by membrane The filtration...

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...

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...

Friday, June 21, 2019

We can always hear such a conversation between those researchers. “Hey, buddy, what is your purity degree of the end products today?” “Damn it. Such a low degree that I cannot even use for the next step. Any better methods for clarifying raw materials?” Then there comes Hawach syringe filter...

Friday, June 21, 2019

Flash chromatographic column, also called rapid chromatographic column(rapid column crossing, which means gradient elution, decompression or pressurization of the column), medium pressure chromatographic column（for example, rapid elution is achieved by pressurizing with nitrogen and...

Friday, June 21, 2019

The cation chromatography column is a kind of high-performance liquid chromatography, which is a liquid chromatography method for analyzing anions and cations. The method has the advantages of good selectivity, sensitivity, rapidity, and simplicity, and can simultaneously measure...

Wednesday, June 19, 2019

Hawach Scientific sorts HPLC out of two series which are Xchroma and Echroma. Xchroma columns possess many and complete types of stationary phase(23 in total) with reliable qualities, while another one is cheaper among lower prices. Essential Technical Parameters Naming Rule It consists...

Friday, June 14, 2019

Hawach introduced the properties and application range of HPLC column stationary phase in the silica gel matrix. Silica gel matrix: Silica gel, weakly acidic, has a strong memory, used to separate non-polar, weakly acidic compounds, oils, etc.; C18, a silica-based uncapped reversed-phase...

Thursday, June 13, 2019

NH2 HPLC columns can be used in the positive phase or in the negative phase, but it should be noted that the positive phase solvent and the negative phase solvent are usually not mutually soluble. New NH2 HPLC columns are preserved in the positive phase environment under normal circumstances...

Thursday, June 13, 2019

It's important to know the way to choose the right syringe filter for filtration. And the membrane materials used for manufacturing syringe filters often determine your choices. Let's learn the different types of membrane materials for filtering in the lab. As the most popular membrane...

Tuesday, June 11, 2019

The installation of the HPLC column should be carried out in the following three steps: a. Unpack the HPLC column and confirm the type, size, date of manufacture, and solvent stored in the column. b. Unscrew the sealing plug from the joints at both ends of the column and put it back...

Friday, June 07, 2019

Syringe filters are one of the types of filters. The structure design of the syringe filter is precise and the liquid is filtered smoothly. Internal space design is reasonable, so the residue rate is very low. In addition, the syringe filter has the following characteristics. Characteristics...

Thursday, June 06, 2019

The empty column is assembled from column joints, column tubes, and filters. The HPLC columns joints are constructed with a low dead volume. The column joints are threaded assemblies at both ends, with 7/16-inch external threads on one end and 3/16-inch internal threads on the other...

Thursday, June 06, 2019

As one of the useful sample preparation technique, solid phase extraction can prevent many problems, such as incomplete phase separations, recoveries with poor quantity, waste of expensive fragile glassware, and extra disposal of organic solvents, which you may occur if you use the...

Tuesday, June 04, 2019

HPLC columns are manufactured and tested to exacting standards. If you use and maintain a liquid chromatography column with the following information, you will not only get better results but also extend the life of your HPLC column. Installation of HPLC columns: 1. First, check that...

Monday, April 29, 2019

C1 HPLC columns are made of ultra-pure silica gel, unique stationary phase bonding technology. High column efficiency, good peak shape symmetry, wide pH range. C1 HPLC Columns Location : Xi'an City , Shaanxi Province, P.R.China, 710077 Xi'an, Contact : Bruce Lu, +86 29 89284429

Wednesday, July 25, 2018

Price : Prix marché compétit

Basée en france, notre société commerciale est un pont entre deux continents et ne fait la promotion que des meilleurs produits d'origine d'ouzbékistan comme les fruits bio, les fruits secs, les produits textiles, plantes médicinales, la céramique et bien d'autres encore sur le marché français...

Tuesday, April 10, 2018

Starlab Scientific special designed syringe filter with extremely low HPLC extractables in 100000 grade clean room. All filters made from Germany with medical grade virgin pp housing, make lowest extractable and contamination free for samples. Both sterile and non-sterile with wide...

Wednesday, March 14, 2018

Quantity : 1kg - Price : $520-625

- Epicatechine/epicatechin Bodybuilding CAS 490-46-0 - XI' AN LESEN BIOTECHNOLOGY CO., LTD specializes in the ten years of plant extracts and export trade, to provide customers with high-quality, organic, natural, good price of various plant extracts, fruit and vegetable powder...

Sunday, February 04, 2018

Quantity : 1 kg - Price : $23-80

Product Description Product Name Stevia extract rebaudioside A Sweetness times 200-450 times Color&odor White characteristic Stevia Assay 95-99% Reb-A Testing Method HPLC Loss on Drying ≤4% Ash ≤0.1% Storage Store in a well-closed container away from moisture...

Sunday, February 04, 2018

Quantity : 1 kg - Price : $23-80

Product Description Product Name Sugar diabetics stevia extract rebaudioside A 97% Color&odor White characterisic Using Part Stevia leaf Testing Method HPLC Loss on Drying ≤4% Ash ≤0.1% Sweetness times 350-400 Solubility In water Soluble in 1% solution PH...

Sunday, February 04, 2018

Quantity : 1 kg - Price : $23-80

Product Description Product Name Low Calorie Weight Loss Sugar Substitute Stevia Tablets Sweetness times 60 times Color&odor White and Characteristic Stevia Assay 97-98% Testing Method HPLC Loss on Drying ≤4% Ash ≤0.1% Storage Store in a well-closed container...

Sunday, February 04, 2018

Quantity : 1 kg - Price : $30-125

Description Chinese ginseng has a history of herbal use going back over 5,000 years. It is one of the most highly regarded of herbal medicines in the Orient, where it has gained an almost magical reputation for being able to promote health, general body vigour and also to prolong life...

Tuesday, January 09, 2018

Quantity : 1 kg - Price : $30-125

Chinese ginseng has a history of herbal use going back over 5,000 years. It is one of the most highly regarded of herbal medicines in the Orient, where it has gained an almost magical reputation for being able to promote health, general body vigour and also to prolong life. The genus...

Tuesday, January 09, 2018

Quantity : 1 kg - Price : $15-50

The word “licorice” refers to the root of a plant called Glycyrrhiza glabra. It's native to Europe and Asia. The plant is actually classified as a weed in those areas. Chinese licorice listed on products are Glycyrrhiza uralensis, the second variety. Glycyrrhiza's name reflects its...

Tuesday, January 09, 2018

Quantity : 1 kg - Price : $30-150

Rhodiola Rosea is known as “golden root” is an adaptogen herb with tremendous fat burning, energy enhancing and brain boosting power. This unique herb grows at high altitudes in the arctic areas of Asia and Eastern Europe. Rhodiola Rosea help your body adapt to physical, chemical...