Hanna, HI70082UM, pH 8.20 Calibration Buffer Solution (230 mL)

HI70082UM is a premium quality pH 8.20 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are accurate to +/- 0.01 pH @ 25 ° C and are traceable to NIST Standard Reference Materials (SRMs).
Air tight bottle with tamper-proof seal
Ensures quality and freshness of solution
Each bottle marked with lot number and expiration date.
Hanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened bottle.
Color coded label for easy pH buffer value identification
Easy to identify different buffer values
Solution does not contain any dyes that may stain the reference cell of a pH electrode
pH 8.2 phenolphthalein endpoint
When using phenolphthalein as an indicator for acid base titrations a faint pink color change occurs at pH 8.2
AOAC Official Method 942.15 B for Acidity in Fruit Products states the titration to pH 8.1 ±0.2
The HI70082UM is used to calibrate meters to pH 8.2 for precise determination of the phenolphthalein endpoint