Description
PH-P4 is a quality pH 4.0 calibration buffer solution produced with high quality salts and deionized water. The solution is accurate +/- 0.02 @ 25 C and are traceable to NIST standards
This solution is for calibration
Do not use with a TDS/EC Meter
Never touch the sensor with your fingers
For additional instructions, consult the meter's user guide
This product contains concentrated material(s) which may be harmful to human health.
DO NOT DRINK.