Milwaukee pH Calibration Sachet Pair | 4.01 + 7.01 | 20 mL Each

Fresh pH 4.01 and 7.01 buffers for one two-point calibration

This Milwaukee calibration pair includes one 20 mL pH 4.01 sachet and one 20 mL pH 7.01 sachet. It gives you fresh, sealed buffer solutions for a complete acidic-range two-point pH meter calibration without opening full bottles.

Each lab-grade buffer is certified to its stated value with an accuracy standard of ±0.01 pH at 25°C. The single-use packaging is sealed against light and air, making this pair useful for occasional calibration, travel, backup supplies or field testing.

What is included

• One Milwaukee M10004 pH 4.01 calibration solution sachet, 20 mL
• One Milwaukee M10007 pH 7.01 calibration solution sachet, 20 mL

This listing is one matched pair, not two 25-count manufacturer cartons.

How to use the pair

1. Rinse the pH electrode according to the meter manufacturer's instructions.
2. Open the pH 7.01 sachet and calibrate the neutral point.
3. Rinse the electrode again.
4. Open the pH 4.01 sachet and complete the acidic calibration point.
5. Discard both opened sachets after calibration; do not save or reuse the solutions.

For frequent calibration, the 230 mL MA9004 pH 4.01 bottle and MA9007 pH 7.01 bottle provide a larger working supply.