Why does the serum in blood vessel collection appear jelly-like?
Normally, blood coagulants are usually with or without thrombin factors, and the time of coagulation with thrombin factors is faster and much shorter. In many institutions requiring rapid detection of serum, most of the coagulants with thrombin factors are used, although the price of coagulants without thrombin factors is low. It's cheaper, but it takes a long time to promote coagulation. Of course, the demand for different institutions will be different.
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Trihydroxymethylaminomethane is an important laboratory reagent widely used in fields such as molecular biology and biochemistry. To ensure its quality and purity, a series of tests are required. This article provides measurement methods for appearance, content, solubility, drying weight loss, pH value, melting point, and UV absorbance. These methods help to evaluate the quality and purity of trimethylaminomethane.