ACETONITRILE - 38 Anuncios

Sábado 25 mayo 2024

De mano detector de líquidos peligrosos Modelo: te-dec100 Marca: Techik Introducción: Detector portátil de liquidos peligrosos es un dispositivo de seguridad especial para la detección de líquidos inflamables y explosivos. Análisis de tamaño pequeño, rápido, fácil de operar...

Miércoles 22 mayo 2024

Resveratrol Also know as: trans-resveratrol;Resvida Plant original: From the dry root of Polygonum cuspidatum Sieb. et Zucc. Chemical Properties Chemical Formula: C14H12O3 Cas No.: 501-36-0 Formula Weight: 228.24 Chemical Family: polyphenols Appearance: off-white crystal...

Miércoles 22 mayo 2024

Icariin Plant original: From the Dry leaves of Epimedium sagittatum Maxim Chemical Properties Chemical Formula: C33H40O15 Formula Weight: 676.6 g/mol Cas No.: 489-32-7 Appearance: Yellow crystal powder Chemical Family: Flavonoids HPLC Detection： C18（ 4.6 ×250mm） Mobilephase...

Miércoles 22 mayo 2024

Cyanidin-3-O-glucoside Also know as: Chrysontemin, Glucocyanidin, Asterin, Cyanidin 3-glucoside, Cyanidol 3-glucoside Plant original: Glycinemax(L.)merr Chemical Properties Chemical Formula: C21H21CIO11 Cas No.: 7084-24-4 Formula Weight: 484.83 Chemical Family: Anthocyanins...

Miércoles 08 mayo 2024

Cantidad : 1000tons - Precio : 2200-2800USD

CAS 23564 05 8 Thiophanate-Methyl Wholesale Colorless ridged crystal, soluble in acetone, methanol, chloroform, acetonitrile, insoluble in water, decomposition in alkaline medium. It has a good control effect on many kinds of diseases of cereals, vegetables and fruit trees. Technical...

Martes 05 septiembre 2023

Solvent Can Be Recovered Name of solvent Name of solvent Methanol Isopropanol Ethanol (Can reach absolute ethyl ) Acetonitrile Methylbenzene Ethyl acetate Acetone THF Dichloromethane DMF Method of Solvent Recovery Batch distillation Continuous distillation Multi-effect...

Viernes 04 agosto 2023

Cantidad : 1000tons - Precio : 2200-2800USD

It is a white solid powder or crystal, easily soluble in acetonitrile, acetone, ethyl acetate and dichloroethane, has certain solubility in DMF and toluene, about 2% solubility in methanol, insoluble in petroleum ether, n-alkyl and other non-polar organic solvents and water. Characteristics...

Miércoles 16 noviembre 2022

Cantidad : >5 units - Precio : USD1000

Solvent Can Be Recovered Name of solvent Name of solvent Methanol Isopropanol Ethanol (Can reach absolute ethyl ) Acetonitrile Methylbenzene Ethyl acetate Acetone THF Dichloromethane DMF Method of Solvent Recovery Batch distillation Continuous distillation Multi-effect...

Viernes 10 junio 2022

Cantidad : >5 units - Precio : 1 000,00 €

Solvent Recovery Plant Solvent Can Be Recovered Name of solvent Name of solvent Methanol Isopropanol Ethanol (Can reach absolute ethyl ) Acetonitrile Methylbenzene Ethyl acetate Acetone THF Dichloromethane DMF PCC was established in 1993, and it's a state owned company...

Sábado 11 diciembre 2021

Cantidad : >5 units - Precio : USD1000

Solvent Recovery Plant Solvent Can Be Recovered Name of solvent Name of solvent Methanol Isopropanol Ethanol (Can reach absolute ethyl ) Acetonitrile Methylbenzene Ethyl acetate Acetone THF Dichloromethane DMF Method of Solvent Recovery Batch distillation Continuous...

Viernes 23 octubre 2020

AMAR HEALTHCARE - API & INTERMEDIATES MANUFACTURERS IN INDIA Plot No. 3012-3013, Phase-III, GIDC, Panoli - 394116 Tel: +91 95120 41602 Email: amarhealthcareorg@gmail.com Website: www.amarhealthcare.in Amar Healthcare, Quality Pharmaceutical API Intermediates Manufacturers in India...

Lunes 09 marzo 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...

Lunes 16 diciembre 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...

Jueves 12 diciembre 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...

Miércoles 09 octubre 2019

Solid phase extraction (SPE) is used to reduce sample matrix interference and improve detection sensitivity. The separation selectivity of the solid phase depends on the retention strength of the components that can be retained, so the selection of the solid phase will depend on the...

Sábado 28 septiembre 2019

Depending on the packing of the HPLC column. The following column types are available on the market: 1. Silica gel HPLC column: Silica gel is the earliest chromatographic column packing used in liquid chromatography. It has a wide range of applications. However, it can only be used...

Jueves 26 septiembre 2019

- Reversed-Phase Principle - The reversed-phase filler is a kindly of nonpolar filler such as C4, C8, C18 aliphatic chain which is bonded on the silica gel. Nonpolar or hydrophobic compounds are strongly reserved, while polar samples are weakly reserved and go through the flash reversed-phase...

Viernes 13 septiembre 2019

Some samples (such as avocado, peanuts, olive oil, etc.) contain more fat. Due to the limited solubility of fat in acetonitrile, the recovery rate of some fat-soluble pesticides (such as HCB, DDT, etc.) is reduced. How to overcome the low experimental results caused by fat? You can...

Miércoles 11 septiembre 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...

Martes 10 septiembre 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;...

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...

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...

Lunes 12 agosto 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...

Jueves 08 agosto 2019

Chromatography is a separation and analysis method and the separation is the core. Therefore, HPLC columns are the heart of the chromatographic system. The requirements for the column are high efficiency, good selectivity and fast analysis speed. Generally, the column length of about...

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...

Martes 06 agosto 2019

Cantidad : 100000TM - Precio : 50USD

Application of Cyclohexanone It is the raw material for the production of caprolactam and adipic acid; used as the solvents and diluent agents of paints, inks, synthetic resins and synthetic rubber; also used as the leather degreasing agent. Used as the organic cyclohexanone solvent...

Viernes 12 julio 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...

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...

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...

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...