Buffer Capsules will accurately produce 100 ml. of solution at pH 4.00, 7.00 and 10.00. Hydrion Buffers are free flowing soluble powders that prepare clear or color safe solutions in minutes. The set contains 1 vial of each buffer standard, with each vial containing 10 capsules.

Borate Buffer, pH 9.00, Chem-Lab is an alkaline buffer solution traceable to Standard Reference Material (SRM) from NIST. It is comprised of Boric acid, Potassium chloride and Sodium hydroxide.