Hanna Instruments HI7010L 10.01 pH Calibration Buffer Solution, 500mL Bottle
HI7010L is a premium quality pH 10.01 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.