Buffer powder for electronic pH meter calibration with 10.01pH value. Powder from one bag is mixed with 250ml of deionized or distilled water, after which the solution has 10.01 pH at 25°C. Powder bag contains a pH conversion scale for 10°C - 50°C temperatures for convenient use. Sealed pH powder bags have virtually unlimited storage life.

6-Pack = 6 units package deal.