Gro Star PH Calibration 4.0

 8 oz. pH 4.0 calibration solution

•  pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings.
• High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F). ideal for the calibration of all pH meters
• Color-coded, double-sealed, 1-year shelf life
• Expiration date and temperature/ph reference chart provided for reference
• Non-hazardous product
• Calibration Solution should be stored in a cool place out of direct sun and heat.