News
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Pump Maintenance
Pump maintenance is an important part in the liquid chromatography system module. Actually, many problems in LC systems can be traced back to the pump. Normally, the pump of the... -
Preliminary Diagnosis of Malfunction in Liquid Chromatography Module
As is known to us all, the module malfunction of liquid chromatography instrument is very harmful, which not only wastes time, samples, energy and money, but also seriously interferes with... -
Purify Antibodies? Welch Comes to Help
Monoclonal antibodies are widely used in the diagnosis, prevention and treatment of diseases. Since the first monoclonal antibody drug was launched in 1986, nearly 40 kinds of McAb drugs have... -
How to Select Guard Columns and Pre-columns?
Inline Filters As in-line filters, pre-columns and guard columns have many similarities and differences simultaneously. ONE How to Differentiate Pre-columns From Guard Columns? Being connected before column, both pre-columns and... -
Q&A for Ion-Pairing Reagent
Ion-Pairing Reagent Ion-pairing reagent, a kind of reagent used in lab, can strengthen the retention of ion samples if added in mobile phase of reverse-phase chromatography. Ion-pairing reagents can improve... -
Welchrom® Immunoaffinity Column
Welchrom® Immunoaffinity Column is used to separate and purify mycotoxins from samples based on specific reactions between antigens and antibodies. Antibodies in the immunoaffinity column suspend in the gel by... -
Q&A for SPE Column
Solid phase extraction (SPE): also known as liquid-solid extraction. It refers to the process in which the analyte in the liquid sample is retained on the adsorbent by adsorption and... -
SEC (Size Exclusion Chromatography)
Overview SEC (Size Exclusion Chromatography) is a technique that separates molecules of interest by their molecular size. There are 2 types of SEC separation known as Gel Filtration Chromatography (uses... -
Reasons for High Efficiency of Core-shell Column
Core-shell column shows high column efficiency, low back pressure, high sensitivity, but majority of people may not know the reasons. In order to understand the characteristics of the core and... -
Lab Assistant (Part A)
In the process of doing experiments, it is inevitable to use some instruments to accelerate experiments and accomplish tasks that can not be accomplished by hand. So some useful experimental... -
How to Find a Flash Column You Expected?
Flash Column For organic synthesis and pharmaceutical chemistry, a largr amount of compounds should be sifted in the early stage. Once the related active compounds are found, it is necessary... -
WelView® Photo Chemical Reactor
P/N：00836-00003 Features ● 20% higher derivative effect than the previous generation ● Extended 450% lifetime compared to previous generation ● Additional leakage warning ● With light status warning and working...