Instant powder for color coded standards

Description

PHP powder pads can be shipped inexpensively, and have a longer shelf life than ready-made standard solutions. One PHP powder pad is precisely portioned for dissolution in 50ml of distilled water and yields 50ml each of colored pH calibration buffer solution. Due to the color coding: red = pH 4.01, yellow = pH 7.0, blue = pH 10.01 errors are largely excluded.

Advantages

Cost-effective shipping, long shelf life, easy and safe handling, and the ability to access fresh unused standards at any time.