HANNA INSTRUMENTS HI77400P - pH 4.01 and pH 7.01 Calibration Kit, 5 x 20 mL of each

HI77400P is a premium quality pH 4.01 and 7.01 calibration buffer solution set.
Each bag is marked with the batch number and expiry date and is made of a lightweight aluminum block ensuring freshness every time you open it.
The HI77400P is designed for 5 sachets of pH 4.01 and 5 sachets of pH 7.01, each containing 20 ml of buffer.
Reported values are accurate to +/- 0.01 pH @ 25°C and are traceable to NIST Standard Reference Materials (SRMs).

The advantages of the HANNA HI77400P individual packaging:
• Ideal for users who do not calibrate frequently
• Ideal for field use due to portability
• Each bag is as fresh as the day it was packed
• Light block packaging prevents oxidation from UV light which could alter the buffer value
• Easy identification of different buffer values
• The solution does not contain any dye that could stain the reference cell of a pH electrode

Practical and economical, the 20 mL sachets are airtight, opaque, protected from light and contain the exact quantity of solution needed for calibration.

The lifespan of an electrode varies depending on its use and maintenance.
To optimize the longevity of the electrodes, there are 3 rules to follow:
Rinsing : Rinse with tap water after each measurement.
Storage : Store the electrode upright and always put a few drops of storage solution in the protective cap.