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.

A solution with a set pH value of 4.00 - to be used for calibration of pH meters, monitors and controllers.

Buffer Tablets, pH 4 (Phthalate), for pH measurement, to make-up volume of 100ml, Fisher Chemical, White, Packaging: Glass Jar, Quantity: 50 tablets.

BUFFER CAPSULES pH 4