HI70082M 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 HI70082M is used to calibrate meters to pH 8.2 for precise determination of the phenolphthalein endpoint