Tris(hydroxymethyl)aminomethane CAS 77-86-1 | 108382
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Tris Base, Ultrol Grade - CAS 77-86-1 - Calbiochem Useful in the pH range of 7.0-9.0. Has a pKa of 8.1 at 25 C. Absorbance (1.0 M, H2O, 260 nm):0.05. 77-86-1
Trizma® hydrochloride solution pH 7.4, BioPerformance Certified, 1 M, suitable for cell culture | Sigma-Aldrich