Hydrion Buffer Capsules are perfect for quick and easy pH meter calibration. When mixed with distilled or de-ionized water, a Hydrion Buffer Capsule will accurately produce 100 ml. of solution at pH 7.00. Hydrion Buffers are free flowing soluble powders that prepare clear solutions in minutes.

Each carton contains 5 vials, with 50 capsules per carton. Each capsule produces 100ml.of solution.