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The Principle and Cleaning Method of NH2 HPLC Columns

Viernes 16 agosto 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.

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Introduction of SPE Column From Hawach

Viernes 16 agosto 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...

Hawach Scientific Co.,Ltd.

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QuEChERS Summary And Method

Jueves 15 agosto 2019

Review the article that I had written for product introductions, it seems that the content which making fun of products basically does not have, a person with the label of “warm person heart” is wearing very tired. The things about making fun are so cool to be said completely by naked...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
QuEChERS Prospects

Miércoles 14 agosto 2019

After years of development, the QuEChERS pretreatme nt method has been continuously improved and broadened by researchers as a simple and rapid residual pretreatment technology. The application target also has been extended from the highest moisture content of vegetables and fruits...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
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China 710077 Varios / Descuento
Important Technical Parameters Of SPE Columns

Miércoles 14 agosto 2019

The important technical parameters of Hawach SPE Columns are the key points of selection. Material The material selection of the SPE column is very important. The column material is in direct contact with the test object or analyte. The quality of material selection determines the...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Role Of Hawach SPE Cartridges

Lunes 12 agosto 2019

Solid phase extraction principle Solid phase extraction is a separation technique that combines selective retention, selective elution, and the like. When a complex sample solution passes through the sorbent, the sorbent selectively retains the aimed compound and a small number of...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
SPE Cartridge Packaging And Application

Jueves 08 agosto 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...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
QuEChERS Solvent

Miércoles 07 agosto 2019

Food safety testing is a major issue related to people's livelihood. In recent years, the QuEChERS method has been widely used in the pretreatment of food safety detection samples. In addition, the method has been applied to trace analysis. QuEChERS Application The international application...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
What Are The Applications Of Ion-Exchange Solid Phase Extraction?

Martes 06 agosto 2019

Ion-exchange solid phase extraction is widely used in biological samples and environmental monitoring. During the extraction process, the pH of the sample is adjusted so that the solute is easily ionized. The solute is exchanged from the resin by changing the pH or increasing the...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Troubleshooting HPLC Column Retention Time Drift

Jueves 01 agosto 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...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
QuEChERS Application Prospects

Martes 30 julio 2019

Since its birth, the QuEChERS method has been widely used in pesticide residue analysis due to its unique advantages and characteristics of fast, simple and cheap. Lehotay et al. established a method, which uses the QuEChERS method to treat samples and analyze 229 kinds of pesticides...

Hawach Scientific Co.,Ltd.

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Bonded-Phase Chromatography

Viernes 19 julio 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...

Hawach Scientific Co.,Ltd.

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Pretreatment for Pesticide Residue Detection – QuEChERS

Viernes 12 julio 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.

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China 710077 Varios / Descuento
The Choice, Use, and Maintenance of HPLC Column

Jueves 11 julio 2019

With the development of society and technology, chromatographic analysis theory has also been developing rapidly. HPLC column has now been widely applied in every field of laboratory analysis. HPLC column gathers function of both detection and separation. With the right choice, use...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 710077 Varios / Descuento
The Choice, Use, and Maintenance of HPLC Column

Jueves 11 julio 2019

With the development of society and technology, chromatographic analysis theory has also been developing rapidly. HPLC column has now been widely applied in every field of laboratory analysis. HPLC column gathers function of both detection and separation. With the right choice, use...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 710077 Varios / Descuento
Polymeric MCX SPE Cartridges

Martes 09 julio 2019

Polymeric MCX SPE cartridges are used to extract strongly alkaline compounds. MCX is a mixed strong cation exchange adsorbent obtained by bonding sulfonic acid groups on highly crosslinked PS/DVB surface. It has both reverse phase and cationic exchange retentive properties and good...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
QuEChERS for Agricultural Residue Pretreatment

Martes 02 julio 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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
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China 710077 Varios / Descuento
Applications of QuEChERS Technology in Pretreating Food Safety Testing Samples

Lunes 24 junio 2019

QuEChERS is widely used in many areas, in the case that the targeting recovery rate satisfies the need, and also the matrix background of removing impurities meets detection, it can be applied to purify stuff such as residues of food and veterinary, additives, plasticizers. However...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
QuEChERS Method to Overcome Matrix Interference

Jueves 20 junio 2019

Extraction is often susceptible to matrix interference. One analytical method is fine in this matrix but can become problematic in another matrix. If we encounter such a situation, how can we improve the QuEChERS method to overcome it? For pesticide residues, most of the food samples...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Easy to Understand the QuEChERS

Miércoles 19 junio 2019

Take the example of pear test to check whether a pear is up to the standard. Prepare the environment The first step: Suitable Acetonitrile salting-out extraction environment was prepared. Make the pears into a puree, take 10g to QuEChERS centrifuge tube of 50ml. Add extract solution...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Learn about SPE Cartridges

Sábado 15 junio 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...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
HPLC Column Silicone Matrix Properties and Scope of Application

Viernes 14 junio 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...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Hawach QuEChERS Solutions

Jueves 13 junio 2019

Package 1 QuEChERS extracting pesticide residues from plants Extraction box: 50 ml centrifuge tube + AOAC/EN salt pack 2 kinds of buffer salts: General buffer salt for phase-separation and pH-adjustment; Anhydrous magnesium sulfate completely separates water in the matrix from the...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Functions of Hawach SPE Cartridges during Extraction

Martes 11 junio 2019

Solid phase extraction (SPE) is a separation process by which compound that is dissolved or suspended in a liquid mixture, thereby being separated from other compounds in the mixture according to their physical and chemical properties. There are 4 general functions as below: 1.Matrix...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Introduction of Flash Columns From Hawach

Viernes 31 mayo 2019

Flash Columns Series Flash Columns produced by Hawachhas three series as follows. StarFlash Only silica gel columns are optional with another two types of standard and high-grade level which has higher purity degree and better quality than the former. PureFlash Corresponding to silica...

Hawach Scientific Co.,Ltd.

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China 710077 Varios / Descuento
Normal Phase Cyanopropyl (CN) SPE Cartridges

Lunes 29 abril 2019

CN (cyanopropyl) solid phase extraction (SPE) cartridge, CN (cyanopropyl) is a weakly hydrophobic silica matrix filler, which can be used as a normal phase or reverse phase adsorbent. The non-polar or weakly polar acid, medium and basic compounds are extracted from the aqueous solution...

Hawach Scientific Co.,Ltd.

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China 518000 Muebles
46inch Seamless LCD Video Wall

Viernes 22 marzo 2019

Roha LCD display has a thin-profile design and the width of its screen-to-screen bezel is small. The appearance of “seams” on the video wall is minimized by this design, and the immersive visual experience is developped. Through using the seamless LCD screen which is high-definition...

Shenzhen Roha Digital Tech.Co.,Ltd

  • 518000 - Dabu Lan
  • 0755 29075243
  • 0086 17817290056
China 518000 Muebles
55inch 3.5mm LCD Video Wall

Viernes 22 marzo 2019

No matter in a range of sizes or in brightness levels, LCD video wall is available. And the broad selection of premium features can be offered by this LCD seamless video wall. In order to meet your requirements, no matter which one you choose, your video wall will be produced purposefully...

Shenzhen Roha Digital Tech.Co.,Ltd

  • 518000 - Dabu Lan
  • 0755 29075243
  • 0086 17817290056
China 518000 Muebles
46inch 3.5mm LCD Video Wall

Viernes 22 marzo 2019

No matter in a range of sizes or in brightness levels, LCD video wall is available. And the broad selection of premium features can be offered by this LCD seamless video wall. In order to meet your requirements, no matter which one you choose, your video wall will be produced purposefully...

Shenzhen Roha Digital Tech.Co.,Ltd

  • 518000 - Dabu Lan
  • 0755 29075243
  • 0086 17817290056
46inch 1.7mm LCD Video Wall

Viernes 22 marzo 2019

No matter in a range of sizes or in brightness levels, LCD video wall is available. And the broad selection of premium features can be offered by this LCD screen video wall Features of 46inch 1.7mm LCD Video Wall. In order to meet your requirements, no matter which one you choose...

Shenzhen Roha Digital Tech.Co.,Ltd

  • 518000 - Dabu Lan
  • 0755 29075243
  • 0086 17817290056
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