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We recommend storing UltraPure 1 M Tris-HCI Buffer, pH 7.5 (Cat. No. 15567027) in the refrigerator (2-8 degrees C).
We offer Tris(hydroxymethyl)aminomethane hydrochloride, 1M soln., pH 7,4, RNase free (Cat. No. J62848.AK).