Selection of gas chromatographic injection methods

In gas chromatography, liquid samples are required to be injected in small quantities, and injections need to be accurate, fast, and highly reproducible. However, in daily gas chromatographic analysis, especially for capillary gas chromatography, injection of liquid samples often has some probl

How should vacuum oven be selected?

How should the vacuum oven be selected?
With the development of various industries in China, more and more experiments need to be done with a vacuum oven, and when we really want to choose which one of which performance, we will find that the original manufacturer of similar products. The

Freeze dryer antifreeze switch

Shanghai Xinzhuang Instrument's humid high-temperature compressed air flows into the pre-cooler (for high-temperature type), and then flows into the heat exchanger to exchange heat with the cold air discharged from the evaporator, so that the temperature of the compressed air entering the e

Basic types of ELISA and Elisa principle

Basic types of ELISA and Elisa principle
ELISA can be used to determine antigens and can also be used to determine antibodies. There are three essential reagents in this assay:

1. a solid phase antigen or antibody;

2. an enzyme-labeled antigen or antibody;


Wash your face with the correct whitening skin

MM people get up every morning because they are rushing to work or going to school, they can't wash their faces well. They often touch the water in the water, and at most they use facial cleanser. But if you want to really wash your face and whiten, you have to pay attention to the deta