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1059
Tissue
blood
Buffer
Plasmas are treated with K2, K3 or Na EDTA disodium chelator at pH8. The Ethylene-diamine-tetra acetic acid with Cas nr 60-00-4 is called Edetic acid. The chemical formula is C10H16N2O8. As anticoagulant GENTAUR also uses heparin and sodium citrate to produce plasmas.
Test
A gel is a solid jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady-state. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinking within the fluid that gives a gel its structure (hardness) and contributes to the adhesive stick (tack). In this way gels are a dispersion of molecules of a liquid within a solid in which the solid is the continuous phase and the liquid is the discontinuous phase. The word gel was coined by 19th-century Scottish chemist Thomas Graham by clipping from gelatin.