QUECHERS - 61 Annonces

Tuesday 04 June 2024

RayCure QuEChERS Ceramic homogenizers can effectively increase sample preparation efficiency by their excellent homogenizing and dispersing abilities. RayCure Ceramic homogenizers are both compatible with RayCure QuEChERS extraction kits and clean-up kits, provide full solution for...

Tuesday 04 June 2024

RayCure QuEChERS Extraction kits are used in the step of extraction with salts in QuEChERS workflow, to transfer target analytes into organic phase using MgSO4 and buffer. The composition of extraction kits is based on the requirements of various QuEChERS methods. Several formats...

Tuesday 04 June 2024

RayCure QuEChERS Clean-up kits are used in the step of purification with salts in QuEChERS procedure, to separate target compounds from interference matices by sorbents. The composition of clean-up kits is based on the requirements of various QuEChERS methods. Several formats of kits...

Thursday 04 April 2024

Prix : 0-50k USD

As testing technology and method for food safety is developed and improved, QuEChERS method has become one of common sample preparation techniques to remove interferents and obtain analytes for analysis of multiple residual pesticides in vegetables and fruits. RayCure QuEChERS kits...

Thursday 04 April 2024

Prix : 0-50k USD

RayKol Group is dedicated to research&development and manufacture of automated laboratory systems. With systematic framework and integrated development of RayKol own core automated lab systems technologies, combined features of robot and artificial intelligence and coordination...

Thursday 04 April 2024

Prix : 0-50k USD

RayKol laboratory consumables and chemical supplies provide a wide selection of quality general lab consumables for equipment in analytical laboratories and life science laboratories. As one of laboratory consumables distributors and laboratory consumables suppliers, ranges of RayKol...

Saturday 16 September 2023

Quantité : 1SET - Prix : 0-50k USD

RayCure QuEChERS Ceramic homogenizers can effectively increase sample preparation efficiency by their excellent homogenizing and dispersing abilities. RayCure Ceramic homogenizers are both compatible with RayCure QuEChERS extraction kits and clean-up kits, provide full solution for...

Saturday 16 September 2023

Quantité : 1SET - Prix : 0-50k USD

RayCure SPE series provides high-quality SPE cartridges for various types of solid phase extraction, including manifold, vacuum as well as automated solid phase extraction equipment, well compatible with RayKol automated solid-phase extraction systems. RayCure SPE cartridges utilize...

Saturday 16 September 2023

Quantité : 1SET - Prix : 0-50k USD

RayCure QuEChERS Extraction kits are used in the step of extraction with salts in QuEChERS workflow, to transfer target analytes into organic phase using MgSO4 and buffer. The composition of extraction kits is based on the requirements of various QuEChERS methods. Several formats...

Saturday 16 September 2023

Quantité : 1SET - Prix : 0-50k USD

RayCure QuEChERS Clean-up kits are used in the step of purification with salts in QuEChERS procedure, to separate target compounds from interference matices by sorbents. The composition of clean-up kits is based on the requirements of various QuEChERS methods. Several formats of kits...

Tuesday 11 July 2023

As testing technology and method for food safety is developed and improved, QuEChERS method has become one of common sample preparation techniques to remove interferents and obtain analytes for analysis of multiple residual pesticides in vegetables and fruits. RayCure QuEChERS kits...

Tuesday 11 July 2023

RayKol Laboratory consumables provide a wide selection of quality general lab consumables for equipment in analytical laboratories and life science laboratories. As one of laboratory consumables suppliers and laboratory consumables distributors, ranges of RayKol lab consumables include...

Tuesday 10 January 2023

As testing technology and method for food safety is developed and improved, QuEChERS method has become one of common sample preparation techniques to remove interferents and obtain analytes for analysis of multiple residual pesticides in vegetables and fruits. RayCure QuEChERS kits...

Tuesday 10 January 2023

RayKol consumables analytical laboratory provide a wide selection of quality general lab consumables for equipment in analytical laboratories and life science laboratories. As one of laboratory consumables suppliers and laboratory consumables distributors, ranges of RayKol lab consumables...

Tuesday 20 September 2022

Prix : 1000-6000USD

RayCure QuEChERS Ceramic homogenizers can effectively increase sample preparation efficiency by their excellent homogenizing and dispersing abilities. RayCure Ceramic homogenizers are both compatible with RayCure QuEChERS extraction kits and clean-up kits, provide full solution for...

Tuesday 20 September 2022

Prix : 1000-6000USD

RayCure QuEChERS Extraction kits are used in the step of extraction with salts in QuEChERS workflow, to transfer target analytes into organic phase using MgSO4 and buffer. The composition of extraction kits is based on the requirements of various QuEChERS methods. Several formats...

Tuesday 20 September 2022

Prix : 1000-6000USD

RayCure QuEChERS Clean-up kits are used in the step of purification with salts in QuEChERS procedure, to separate target compounds from interference matices by sorbents. The composition of clean-up kits is based on the requirements of various QuEChERS methods. Several formats of kits...

Saturday 11 June 2022

Prix : 1000-6000USD

RayCure QuEChERS Ceramic laboratory homogenizers can effectively increase sample preparation efficiency by their excellent homogenizing and dispersing abilities. RayCure Ceramic homogenizers are both compatible with RayCure QuEChERS extraction kits and clean-up kits, provide full...

Saturday 11 June 2022

Prix : 1000-6000USD

RayCure QuEChERS Dispersive SPE kits provide extraction salts, clean-up kits and ceramic homogenizers for methods and standards using QuEChERS techniques. The kits are used to remove impurities from samples. QuEChERS has become a common sample preparation method for the analysis of...

Saturday 11 June 2022

Prix : 1000-6000USD

RayKol consumables analytical laboratory provide a wide selection of quality general lab consumables for equipment in analytical laboratories and life science laboratories. As one of the leading laboratory consumables suppliers and laboratory consumables distributors, ranges of RayKol...

Monday 13 April 2020

Characteristic of QuEChERS Extraction Salts The QuEChERS method is fast, simple and economical, and Hawach makes the QuEChERS program easier. Specialized glassware is not required when you use Hawach QuEChERS to pick up bags and tubes. The freely flowing extracted salt and salt packs...

Monday 30 March 2020

1. Why does the QuEChERS approach recommend use dry ice or liquid nitrogen homogenizing frozen samples and extracting samples while frozen? The frozen samples were homogenized with dry ice or liquid nitrogen, and the samples were made into a fine powder (smaller particle size, more homogeneous)...

Monday 16 March 2020

Our products are the things used in the QuEChERS method, including two major categories: extraction boxes and purification boxes; extraction boxes include salt bags and 50ml centrifuge tubes, but due to the high shipping costs of 50ml centrifuge tubes and common in customer laboratories...

Monday 09 March 2020

The QuEChERS method has the following advantages : (1) high recovery rate, which is greater than 85% for a large number of polar and volatile pesticide varieties;(2) high accuracy and accuracy, can be corrected by internal standard method;(3) a wide range of analyzable pesticides...

Sunday 19 January 2020

The QuEChERS method is a sample preparation technology based on solid-phase extraction and matrix solid-phase dispersion technology. It is suitable for the treatment of low-fat samples and can achieve ideal results for samples containing less than 15% fat. Because of its simple operation...

Monday 13 January 2020

The dispersed solid phase extraction kit is selected based on the type of food being analyzed and the method used. In this step, the extracted sample is added in equal amounts to a 2 ml or 15 ml centrifuge tube. The centrifuge tube contains a small amount of solid phase extraction...

Tuesday 07 January 2020

Originally designed to analyze fruits and vegetables, QuEChERS now includes a variety of products. Since being developed and released by scientists at the United States department of agriculture in 2003, QuEChERS has gained increasing popularity as a method of selection. It combines...

Monday 16 December 2019

Originally, QuEChERS was used as a test for multiple pesticide residues in vegetables or fruits. Up to now, its application range is no longer limited to this. At present, QuEChERS has a wide range of applications in agricultural and veterinary drug residues in agricultural products and foods...

Thursday 12 December 2019

QuEChERS is a streamlined technique that makes it easier and cheaper for analytical chemists to examine the pesticide residues in agricultural products. It is exploited by many professors of the American Ministry of Agriculture in 2003, especially Anastassiades. This technique shares...

Tuesday 10 December 2019

Due to the variety of targets, large structural differences, and low target content, the detection of pesticide residue method requires being accurate, rapid, sensitive, simple and low cost. The QuEChERS method is more and more widely used in pesticide residue detection, as it is green and quick...

Thursday 10 October 2019

QuEChERS firstly came out in 2003. The inventors of QuEChERS, Michelangelo Anastasiades and Steve Lehotay, were asked for the three biggest improvements in this method from development to now. They made the following statement. In the period of conceiving the method QuEChERS, we have...

Tuesday 08 October 2019

It is not difficult to find the early application of QuEChERS in pesticide residue detection in China, mainly for single pesticide detection, and most of the extraction and purification targets are carbamate, organophosphorus and pyrethroid. With the development of technology, the...

Monday 30 September 2019

The purifying agent holds an important position in the QuEChERS pre-treatment method. An appropriate selection and application of it would be necessary for the users to improve the efficiency of purification and accuracy of the sampling detection result. Selection of purifying agents...

Thursday 26 September 2019

Along with the rapid improvement of domestic technology, the QuEChERS analytical method is no longer just applied in the pesticide residue detection on food and fruits, but also used for the extraction and purification of cereal samples with low moisture content. Moreover, it is also...

Wednesday 25 September 2019

Knowledge of QuEChERS Quick, Easy, Cheap, Effective, Rugged, Safe are generally abbreviated to QuEChERS. It is a sample pretreatment method for agricultural product detection. It is used to absorb and remove impurity, and the operational principle is similar to high-performance liquid...

Monday 23 September 2019

The reason for the QuEChERS matrix effect in the liquid state is generally considered to be due to the non-volatile components in the matrix and the substance to be tested, which competes in the ionization process. The matrix effect in gas phase temperament is generally attributed...

Wednesday 18 September 2019

Selection of scavengers The conventional QuEChERS method only uses PSA which is too simple single that can no longer meet the complex matrix samples examination experiments. GCB (graphitized carbon black) can effectively adsorb pigments, non-polar interferences such as sterol due...

Tuesday 10 September 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;...

Saturday 24 August 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...

Thursday 22 August 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...

Thursday 15 August 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...

Wednesday 14 August 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...

Friday 09 August 2019

- Some Tips In QuEChERS D-SPE? - Why choose anhydrous magnesium sulfate as a water remover? In the d-SPE purification process, the moisture content plays a crucial role in the purification effect of PSA. The lower the moisture content, the better the purification effect of PSA. Experiments...

Wednesday 07 August 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...

Monday 05 August 2019

QuEChERS method has unique advantages in pesticide residue analysis. Due to the irrational use of pesticides and inadequate supervision of pesticide use, people may suffer from acute or chronic pesticide poisoning after eating pesticide-contaminated food, and even threaten human health...

Thursday 01 August 2019

QuEChERs is a sample treatment and purification technology for the detection of multiple pesticide residues in high-water-content food. Because it simplifies the previously complex extraction procedures and expands the scope of the extracted pesticide residues, QuEChERs becomes an...

Tuesday 30 July 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 12 July 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...

Friday 12 July 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...

Wednesday 10 July 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...

Monday 08 July 2019

QuEChERS is a pretreatment that has the characteristics of Quick、Easy、Cheap、Effective、Rugged and Safe, which is the reason why it is becoming more and more popular in the new testing methods. It was developed by Professor Anastassiades in 2003, which was used in agricultural testing at first...

Friday 05 July 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...

Thursday 04 July 2019

As an acronym for Quick, Easy, Cheap, Effective, Rugged and Safe, the method of QuEChERS achieves as a variety of sample preparation and clean-up techniques for the analysis of multiple pesticide residues in the field of agriculture. Originally designed for the analysis of fruits and vegetables...

Tuesday 02 July 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 24 June 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 20 June 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 19 June 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...

Thursday 13 June 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...

Friday 07 June 2019

QuEChERS method was originally applied to extract pesticides from fruits and vegetables. Whether under AOAC or EN stipulations, according to our products' Application and Test Report, we can see that the combination of salting out and d-SPE-purification in the initial liquid-liquid...

Wednesday 05 June 2019

Hawach summarized the advantages of QuEChERS in eight aspects. 1. Recovery Rate QuEChERS technology has the advantage of high recovery rate. Experimental data show that the recovery rate of large quantities of polar and volatile pesticides by QuEChERS is above 85%. 2. Accuracy Laboratory...

Saturday 27 April 2019

Hawach Scientific Co., Ltd QuEChERS is a sample treating method, which means quick, easy, cheap, effective, rugged and safe. Our products include four types which are QuEChERS kit, QuEChERS extraction salts, QuEChERS dispersive SPE kit, QuEChERS dispersive absorbent, QuEChERS ceramic...