HANNA HI70442L TDS Calibration Solution (1500 mg/L (ppm), 500mL)

   HI70442L is a premium quality 1,500 mg/L (ppm) TDS calibration solution standardized with a conductivity meter that has been calibrated with potassium chloride NIST 2202 SRM (Standard Reference Material) in deionized water for analytical use in accordance with ISO 3696/BS3978. Additional equipment used in preparation of the solutions include certified weight-checked balances, Class A glassware and certified thermometers.

Air tight bottle with tamper-proof seal
Ensures quality and freshness of solution

Each bottle marked with lot number and expiration date
Hanna TDS calibration solutions are specially formulated to have an expiration of 5 years from manufacture for an unopened bottle.