Hanna pH 10.01 Calibration Buffer Sachet (20 mL)

This is a single-use sachet of pH 10.01 calibration buffer, holding 20 mL of standard solution. It is used to calibrate a pH meter or probe at the high end of the scale, so your readings stay true to a known reference point. The buffer reads 10.01 pH at 25°C, with an accuracy of ±0.01 pH, and it is NIST traceable.

Each sachet comes in light-block foil, which protects the solution from UV light that could shift its value, and every one opens as fresh as the day it was filled. The lot number and expiration date are stamped on each sachet. Unopened, the buffer has a shelf life of 2 years from the date of manufacture.

The sachet format suits hobbyists who only calibrate now and then, since you open a fresh portion when you need it rather than keeping a bottle going stale. It also travels well, which makes it handy for field testing. The colour-coded label makes the buffer value easy to identify, and the solution contains no dyes that could stain the reference cell of a pH electrode.

Supplied as 1 sachet, 20 mL.