HANNA®' buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards.

The 20 mL sachets are single-dose whereas.

All pH 4 solutions show batch number, expiration date and the correlation table between pH and temperature.

Buffer solution pH4.01

Antal

The pHep®5 HI98128 tester is for users that require the greatest accuracy and features while staying..

HI98129 is a tester that offers high accuracy pH, EC/TDS and temperature measurements in a single te..

HI 98130 is a tester that offers high accuracy pH, EC/TDS and temperature measurements in a single t..