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Wednesday, August 07, 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...

Tuesday, August 06, 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...

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...

Tuesday, July 30, 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...

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...

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...

Thursday, July 11, 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...

Thursday, July 11, 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...

Tuesday, July 09, 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...

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...

Monday, June 24, 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...

Thursday, June 20, 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...

Wednesday, June 19, 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...

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

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

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...

Tuesday, June 11, 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...

Friday, May 31, 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...

Monday, April 29, 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...

Friday, March 22, 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...

Friday, March 22, 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...

Friday, March 22, 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...

Friday, March 22, 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...

Saturday, January 19, 2019

Price : USD 100-1000 / Kilog

Supplying Ability: 100 Kilograms / Week Price Term: FOB Payment Terms: L/C T/T Western Union Port: shanghai Quick Details Country of Origin: China Brand Name: xiancaoyu Average Lead Time: according to the quantity and product Packaging Detail: as required Product Description Product name...

Tuesday, December 18, 2018

Quick Detail: - High Strength, low weight - high stiffness - wear resistance - rigid - UV stable - strick OD / ID control - Many different lengths from 1ft to 55ft are available as requested Description: These carbon fiber telescoping poles slide effortlessly and could be locked...

Tuesday, December 18, 2018

Quick Detail: - High Strength to weight ratio - Good Rigidity - Corrosion resistant - Fatigue Resistant - Good tensile strength - Low coefficient of thermal expansion - Non poisonous - X-Ray Permeable Description: 60FT high modulus carbon fiber pole is a 11-section pole which...

Tuesday, December 18, 2018

Description: Made of hybrid carbon fiber & fiberglass tubes, this range pole is lighter and lasts longer. The main reason is that one of the biggest benefits of using composite tubing in general is the ability of the material to resist weather much better than metals because it...

Tuesday, December 18, 2018

Quick Detail: - very lightweight and easy to operate - cheaper than a steel or aluminum pole of the same height - insulated - do not interfere with the radiation pattern of the antenna - They are available in multiple lengths Description: Fiberglass poles can be manufactured...

Tuesday, December 18, 2018

Quick Detail: - High Strength-to-weight ratio - Less than half the weight of aluminum tubing and at least twice as stiff - Much lighter and stiffer than steel but not as strong - High stiffness low weight - ageing resistance - Standard: ISO9001 - All other different lengths...

Monday, October 29, 2018

Price : 1,03 €/250 gr.

Our ground coffee in 250 gr .. Product Nature: Coffee AFRICA (ground coffee). Origin: ITALY. Traditional roasting in Italy (Grains Africa and Asia 100% Robusta) D.LC: Fresh date. Logistics: Loads of 20 X 250 gr = 60 Loads of 20 packages / pallet = 1200 packages / pallet. Trucks of 33 pallets...