CHROMATOGRAPHIC - 121 Annonces

Mardi 26 juillet 2022

Prix : 100USD

LONG-CHAIN SILANES Co-Formula has successfully synthesized a series of long-chain functional silanes including octyl(C8), dodecyl(C12) and octadecyl(C18) silanes. Co-Formula has successfully synthesized a series of long-chain functional silanes including octyl(C8), dodecyl(C12) and...

Mardi 26 juillet 2022

Prix : 100USD

HEXAMETHYLDISILANE CFS-142, Hexamethyldisilane, Cas No. 1450-14-2 Hexamethyldisilane Description For more details about this product, please contact Co-Formula. Keywords about Co-Formula: ISO9000 & ISO14000 Certified Manufacturer of Organic Silicone Materials; Professional manufacturer...

Mardi 26 juillet 2022

Prix : 100USD

CFS-126, Hexadecyltrimethoxysilane , Cas No. 16415-12-6 Hexadecyltrimethoxysilane Hexadecyltrimethoxysilane Description For more details about this product, please contact Co-Formula. Keywords about Co-Formula: ISO9000 & ISO14000 Certified Manufacturer of Organic Silicone Materials...

Jeudi 07 juillet 2022

Name: Trimethylchlorosilane Feature: Trimethy lchloro silane is a colorless or light yellow transparent irritating liquid. trimethylsilyl chloride cas no .: 75-77-4 Technical Data of Trimethylchlorosilane Testing Items Testing Standards Trimethylchlorosilane /% ≥ 99.5 Methyltrichlorosilane...

Mercredi 09 mars 2022

Hepatitis C Virus (HCV) is a small, enveloped, positive-sense, single- stranded RNA Virus. HCV is now known to be the major cause of parenterally transmitted non-A, non-B hepatitis. Antibody to HCV is found in over 80% of patients with well-documented non-A, non-B hepatitis. Conventional...

Samedi 01 janvier 2022

Name: Trimethylchlorosilane Feature: Trimethylchlorosilane is a colorless or light yellow transparent irritating liquid. CAS No.: 75-77-4 Technical Data of chlorotrimethylsilane Testing Items Testing Standards Trimethylchlorosilane /% ≥ 99.5 Methyltrichlorosilane /% ≤ 0.05...

Samedi 27 novembre 2021

Quantité : 1000Kgs - Prix : USD1~2000/Kg

Phenyl Functional Silicone, Phenyl Silicone Oil, Phenyl Modified Silicone, Diffusion Pump Fluid, silicone diffusion pump oil, Heat Transfer Fluid, Heat Transfer Oil Compared to the same viscosity of dimethyl silicone fluid, phenyl methyl silicone fluid has higher coefficient of...

Lundi 27 septembre 2021

Name: Trimethylchlorosilane Feature: Trimethylchlorosilane is a colorless or light yellow transparent irritating liquid. CAS No.: 75-77-4 Technical Data of Trimethylchlorosilane Testing Items Testing Standards Trimethylchlorosilane /% ≥ 99.5 Methyltrichlorosilane /% ≤ 0...

Mercredi 08 avril 2020

Importance of Proper Models of HPLC Column In practical application, proper models of the HPLC column have a great influence on the performance or operation of the HPLC column. Improper models could greatly reduce the filtration effect. The HPLC column of high purity silica gel matrix...

Mercredi 01 avril 2020

The properties of the reversed-phase filler are determined by the matrix and the substrate. the particle shape, size, pore size and pore size distribution of the matrix, specific surface area, residual silicon hydroxyl concentration, and the content of impurity ions will all have...

Mardi 31 mars 2020

SPE technology is a physical extraction process including liquid phase and solid phase based on the theory of liquid-solid chromatography, which uses selective adsorption, selective elution to enrich, separate and purify the sample. In daily application, SPE cartridge can also be...

Mardi 24 mars 2020

The capacity of the SPE cartridge refers to the adsorption amount of the column packing. For silica-based solid-phase extraction columns, the capacity is generally 1 to 5 mg/100 mg, which means that the column capacity is 1% to 5% of the mass of the packing. The capacity of the bonded...

Mercredi 18 mars 2020

Widely used to remove particles from a liquid sample and avoid damage to equipment at the same time, syringe filter is affordable tool in the labs, which the scientists can use for small-volume filtration. You can find two different types of filters, one is with which you can recover your sample...

Mardi 17 mars 2020

How to understand the chromatographic separation? Put it in short, the more similar the separated substance to the stationary phase, the longer the residence time on it. In this way, different substances in a complex mixed solution can be separated according to time, and the separated...

Vendredi 13 mars 2020

Generally, vacuum filtration can be used for collecting a desired solid too. Do not use vacuum filtration to filter a solid from a liquid if it is the liquid that you want for your applications. If the liquid is a low boiling, vacuum filtration is not a good choice either, because...

Mardi 10 mars 2020

Types of HAWACH HPLC Column There are 2 kinds of HAWACH HPLC columns: Xcheoma series: with many types of fixed phase; with complete varieties and high quality. C18-Aqueous; C18-universal;C18-low pH; C18-Alkaline; C8-universal; C8-Low pH; C8-Fluorine; C4; C30; C1;Phenyl; PAH; etc Echroma series...

Mercredi 22 janvier 2020

The sealing property of the headspace vial is better than that of the threaded vial, and the rubber or silica gel has good re-sealing after the puncture, so it is ideal to preserve the reagents. If some of the organic solvents in use will corrode the silicone or rubber bottle pad...

Mardi 21 janvier 2020

The FLASH column is the heart of the FLASH purification system, like an engine in a car. If you want to do a good job, you must first sharpen the tools. Choosing the correct FLASH purification column is the most critical part of the whole purification process. And choosing the right...

Mardi 14 janvier 2020

The sample shall be dissolved as much as possible in solvents that are mutually soluble with the mobile phase. Except for special designation, the resolution of the sample HPLC column may be reduced if it is dissolved using a strong solvent. Besides, the sample solution shall be pre-filtered...

Vendredi 10 janvier 2020

When selecting the filter paper, people should combine the Rf value of the separated object. For the compounds with slight differences in Rf values, slow filter paper can be used to separate the compounds clearly because using the fast filter paper will cause the inseparable weight...

Mercredi 08 janvier 2020

When the filter element has been used for a long time and the filtration speed still recovers less than ideal after recoil with the above method, the filter element can be removed and immersed in NaOH solution with a concentration of 2-4% for 4-8 hours. Then, clean water filtered...

Lundi 06 janvier 2020

Hawach solid phase extraction cartridges are designed for sample pretreatment to remove or minimize sample matrix and other interferences to “clean up” a sample prior to analysis. This procedure can also concentrate an analyte to achieve the desired sensitivity range of an analytical method...

Mercredi 11 décembre 2019

Flow Process of HPLC column First, the solvent in the storage bottle is pumped into the chromatographic system by pump and then output, and then introduced into the sampler after flow and pressure measurement. Second, object to be tested is injected by the sampler, passes through...

Mardi 15 octobre 2019

Quantité : 2500km/wee - Prix : <200 USD

Description: There are two common structures for Air-blowing central Loose tube Micro fiber cable. One is a air-blowing smooth micro-cable and the other is a air-blowing micro-grooved micro-cable. The structure of Air-blowing micro tube fiber optic cable is completely different from...

Dimanche 13 octobre 2019

Solid phase extraction is a sample preparation method based on the chromatographic analysis. Solid phase extraction includes a solid phase (adsorbent with a certain functional group) and a liquid phase (sample and solvent). The liquid sample passes through a solid phase extraction...

Jeudi 10 octobre 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Mercredi 09 octobre 2019

Generally speaking，with the increase of temperature, the viscosity of the mobile phase decreases. The situation will lead to an increase in the transfer rate of the substances. Thus the chromatographic separation effect will be better than before. Although the separation effect has been improved...

Mardi 08 octobre 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Lundi 30 septembre 2019

HPLC columns are widely used in many fields, whose column efficiency, capacity, permeability characteristics, and service life are very important. After using for a period of time, there will be changes such as column pressure increase, column efficiency decrease, etc. If no measures are taken...

Dimanche 29 septembre 2019

There are many types of chromatographic methods, and different classification methods can be used from different perspectives. Classification from the state of two phases. In the chromatography, the mobile phase may be a gas or a liquid, and thus can be classified into gas chromatography...