L-250 pH meter buffer solution preparer

Instructions for pH buffer solution: The 250 mL buffer solution can be used in
multiple portions. Pour enough buffer to fully submerge the glass electrode.
Discard the used buffer solution and do not reuse it. Store the remaining buffer
in a cool, dry place at 20–25°C. After prolonged use, the pH electrode will
develop asymmetry and its potential will shift significantly, so regular
calibration is required.

Minimum Order: 1 bags