The HI-5036-023 contains 230 mL of calibration solution and complies with ISO3696/BS3978 standards using high purity salts, deionised water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers.
Calibration solution for Gro line pH and EC/TDS meters
pH calibration buffer value of pH 6.86
EC calibration standard value of 5,000 μS/cm (5.00 mS/cm)