pH Meter Buffer Solution for pH 4.01 (20mL Pack)

Buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards.

The 20 mL sachets are single-dose and show batch number, expiration date and the correlation table between pH and temperature.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.