pH Calibration Buffer Solution 4.01 - Meytec

It is a ready-to-use pH 4.01 reference solution, intended for precise calibration of pH probes and measuring devices (analyzers, testers, pool controllers, etc.).

The pH 4.01 point is an international standard for calibrating pH electrodes in acidic zones. It ensures a stable reference and improves the accuracy of measurements over time.

It is compatible with all pH probes and devices on the market, regardless of brand, provided that fixed-point pH 4.01 calibration is supported.

1. Rinse the probe with distilled water and gently wipe it dry.
2. Pour a small amount of solution into a clean container (do not calibrate directly from the bottle).
3. Immerse the electrode, wait for the reading to stabilize.
4. Adjust the device to pH 4.01 according to the manufacturer's instructions.
5. Rinse the probe with distilled water after calibration.

At least once a month, or according to the frequency recommended by the manufacturer. Repeat after any major intervention (probe replacement, winterization, chemical shock).

It is ready to use. Do not add anything or dilute it. Use small quantities and discard any excess after use to avoid contamination.

No. Never return used solution to the original bottle. Discard any portion taken out after calibration to preserve the accuracy of the reference.

Keep the bottle tightly closed, away from light and heat. Avoid temperature variations and contamination of the neck or cap.

Yes, pH varies slightly with temperature. Ideally, calibrate at a stable ambient temperature and allow the probe to stabilize before adjusting to 4.01.

Refer to the date indicated by the manufacturer. Replace the solution if its appearance changes, if it has been contaminated, or after a long period of being open.

Yes. It can be used as a spot check solution. If a significant deviation is observed, perform a complete calibration according to the device's instructions.