CHROMATOGRAPHY - 284 ads

The Brief Introduction of Flash Column Chromatography

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...

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The History Of Ion Chromatography

Tuesday, September 24, 2019

Ion Chromatography is one of high-performance liquid chromatography (HPLC) and is a liquid chromatography method for the analysis of anions and cations. In a narrow sense, ion chromatography is a chromatographic method in which a low exchange capacity ion exchange resin is used as...

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Two Common Adsorbents for Adsorption Chromatography

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...

Hawach Scientific Co.,Ltd.

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Precision Tubes

Saturday, September 21, 2019

Quantity : 5000 ton/p - Price : 0.8usd

Product description Precision Tubes Description The traditional annealing approach is performed in a so referred to as open furnace, where the atmospheric oxygen reasons scaling of the heat treated materials, which makes the surface rough. HUASHANG STEEL has developed a one of a kind...

WENZHOU HUASHANG STEEL CO.,LTD

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China 325000 B2B Services
Bright Annealed Tubes

Saturday, September 21, 2019

Quantity : 5000 ton/p - Price : 0.8usd

Product description Bright Annealed Stainless Steel Tubing Description The traditional annealing approach is performed in a so referred to as open furnace, where the atmospheric oxygen reasons scaling of the heat treated materials, which makes the surface rough. HUASHANG STEEL has...

WENZHOU HUASHANG STEEL CO.,LTD

  • 325000 - zhejiang
  • 86 577 86868069
The Material of Syringe Filter

Friday, September 20, 2019

Syringe filter can be used in the analysis of high performance liquid chromatography and IC. It is an important step in sample pretreatment to filter sample solution. The syringe filter with high quality is produced by using the most advanced detection means and production technology...

Hawach Scientific Co.,Ltd.

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What Are The Characteristics Of Solid Phase Extraction?

Friday, September 20, 2019

Solid phase extraction is essentially a liquid chromatographic separation. The main separation mode is the same as that of liquid chromatography. It can be divided into normal phase (the polarity of the adsorbent is greater than the polarity of the eluent), and the reverse phase (the...)

Hawach Scientific Co.,Ltd.

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Polyphenols In Tobacco Samples By HPLC Column

Thursday, September 19, 2019

The determination of 10 plant polyphenols in tobacco samples by solid phase extraction and high-performance liquid chromatography as below: Plant polyphenols are important substances in tobacco. The content of polyphenols in tobacco has an important influence on tobacco quality. Therefore...

Hawach Scientific Co.,Ltd.

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Electronic Bottle-Top Dispenser

Thursday, September 19, 2019

Hawach scientific always focus on providing high-quality laboratory instruments, consumables, and services for users in the field of life medicine and chromatography. We adhere to the customer as the center, rapid response to customer needs, continue to create long-term value for...

Hawach Scientific Co.,Ltd.

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Chemically Bonded Phase Chromatography

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...

Hawach Scientific Co.,Ltd.

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The Characteristics Of Syringe Filter

Wednesday, September 18, 2019

In the analysis of HPLC, the packing size of chromatographic column is small, and it is easy to be blocked by impurity particles. Therefore, samples and solvents need to be pre-filtered to remove particulate pollutants and protect chromatographic columns and instruments. Ion chromatography...

Hawach Scientific Co.,Ltd.

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Adsorption chromatography

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...

Hawach Scientific Co.,Ltd.

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Cleaning The RP-HPLC Columns

Monday, September 16, 2019

Reversed phase chromatography (RP) is the most widely used technique in high-performance liquid chromatography (HPLC) up to now, mainly because it is suitable for the analysis of most of them. Nonpolar substances and many ionizable and ionic compounds. Most stationary phases used...

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SPE Technology Brief Introduction

Monday, September 16, 2019

The extraction is divided into liquid phase extraction (LLE) and solid phase extraction (SPE). SPE technology is a column chromatography separation process. The technology is a combination of liquid-solid extraction and column liquid chromatography. The combination of this technology...

Hawach Scientific Co.,Ltd.

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Key Words of Filtration Terms

Thursday, September 12, 2019

Filtration is a process in a chemical experiment, separating solids from liquids or gases through a filter medium. Only the fluid or the gas is allowed to pass, not the solid. And the key words of filtration terms can help you understand how the filter works. Hydrophilic, called “water-loving”...

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Characteristics Of High-Performance Liquid Chromatography

Thursday, September 12, 2019

As an important branch of chromatography, high-performance liquid chromatography (HPLC) has become an important application of separation and analysis technology in the fields of chemistry, medicine, industry, agriculture, commodity inspection, and law inspection. Features of high-performance...

Hawach Scientific Co.,Ltd.

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Introduction To Flash Chromatography

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...

Hawach Scientific Co.,Ltd.

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Precautions During The Use Of RP-HPLC Columns

Wednesday, September 11, 2019

When storing the column, the column should be filled with acetonitrile or methanol, and the column joint should be tightened to prevent the solvent from evaporating and drying. It is absolutely forbidden to leave the buffer solution in the HPLC columns for an overnight or longer period of time...

Hawach Scientific Co.,Ltd.

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SPE Cartridges Structure

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...

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The Separation Essence Of Different Chromatography

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...

Hawach Scientific Co.,Ltd.

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2ml crimp chromatography vials

Friday, August 30, 2019

Quantity : 100pcs - Price : 2.35usd

Crimp Neck Vials ND11 Part No. V1117(Economy) V1113(Expansion 33) V1127(Economy) V1123(Expansion 33) V1137(Economy) V1135(Expansion 51) V1147(Economy) V1145(Expansion 51) Description 1.5ml wide opening crimp-top vial, clear 11.6*32mm USP 1 1.5ml wide opening crimp-top...

Quzhou Lab Technology Co.,Ltd

  • 324000 - Quzhou
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China 324000 Stock lots
2ml clear chromatography vials

Friday, August 30, 2019

Quantity : 100pcs - Price : 3.12usd

Short Thread Vials ND9 Part No. V917(Economy) V913(Expansion 33) V927(Economy) V923(Expansion 33) V937(Economy) V935(Expansion 51) V947(Economy) V945(Expansion 51) Description 1.5ml wide opening screw vial,clear 11.6*32mm USP1 1.5ml wide opening screw vial with write on patch...

Quzhou Lab Technology Co.,Ltd

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Characteristics of Membrane Filter

Friday, August 16, 2019

The membrane filters of different materials have different characteristics. Here are as follows: - Nylon (NY) Material - Features: hydrophilic, resistant to some organic materials, not strong acid, protein binding capacity is high, so it is not suitable for protein recovery. Application...

Hawach Scientific Co.,Ltd.

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Flash Column Versus SPE Column

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...

Hawach Scientific Co.,Ltd.

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Flash Column Chromatography

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...

Hawach Scientific Co.,Ltd.

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A Brief Introduction of Sample Vials

Monday, August 12, 2019

With the continuous development of the sample vials, more and more types and functions of the sample vials appear in laboratory analysis. The capacity of sample vials is bigger and bigger. The sampling speed of the sample vials is faster and faster. The sampling accuracy is higher and higher...

Hawach Scientific Co.,Ltd.

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The Importance Of Flash Columns In Chromatography

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...

Hawach Scientific Co.,Ltd.

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Material and Maintenance of HPLC Columns

Monday, August 12, 2019

The system of an HPLC column is composed of a liquid, a reservoir, a pump, a sampler, a column, a detector and a recorder. - The packing material of HPLC columns - The packing material has high carbon content, small surface polarity, very low chemical purity and high surface separation...

Hawach Scientific Co.,Ltd.

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The History and Development of Reversed-Phase Chromatography

Friday, August 09, 2019

Reversed-phase chromatography (RPC) contains any chromatographic method using a non-polar stationary phase. The word “reverse” has a historical background. In the 1970s, most liquid chromatography was performed on unmodified silica or alumina. Their surface chemistry is hydrophilic...

Hawach Scientific Co.,Ltd.

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Normal Problem and Solution in GC Test

Thursday, August 08, 2019

More than 90% of gas chromatographic problems occur in the inlet, and it is necessary to see which problems may occur in the inlet. Problem No.1: Leak If there is a leak, the pressure on the inlet may not be maintained, and the instrument will alarm. If the problem cannot be solved in time...

Hawach Scientific Co.,Ltd.

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