Hanna Calibration Solution pH 4.01 20ml (25 Pack) – Hi-70004P

A box of 25 sachets of pH 4.01 buffer solution – Hi-70004P. Each sachet contains 20ml of solution and can be used to calibrate any of our pocket meter range, or any pH meter with a conventional pH electrode.

Our wide range of calibration solutions also includes solutions provided with a certificate of analysis, to satisfy the requirements of any application from the farm to the factory.