Hanna HI-70004P pH 4.01 Buffer Sachets 25 x 20 ml sachets

Hanna Calibration Solution pH 4.01 & 7.01 (5 x 20ml of each)HANNA instruments' buffer solutions are prepared according to precise formulas and are standardised with a pH meter calibrated according to the proper standards.The 20 mL sachets are single calibration dose. All pH 4.01and 7.01 solutions show batch number, expiration date and the correlation table between pH and temperature.A box of 10 sachets, 5 of pH 4.01 buffer solution and 5 of pH 7.01 buffer solution. 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. pH Value @ 25°C 4.01 & 7.01 Size 20 mL Package 10 sachets (5 each)