TES, Sodium Salt (N-[tris-hydroxymethyl] methyl-2-aminoethanesulfonic acid sodium salt)

TES Sodium Salt is a biological buffer (zwitterionic) designed by Good, et al., and typically referred to as Good's buffer useful in cell culture media formulations. Selection of biological buffer systems should include the following criteria: exclusion by biological membranes, low absorption between 240 and 700nm, chemically stable, and stable to temperature and concentration changes. Identity (IR): Conforms to reference , Solubility (20%): , Colorless, clear, complete, Absorbance (290nm): <0.10 , Absorbance (280nm): <0.30, Absorbance (260nm): <0.50 , pH (1%, dH2O): , 9.5-10.1, Water Content (By KF): <7.0% , Residue On Ignition: < 0.1%, Heavy Metals: < 0.0001%