Description
Meytec buffer solution – RX 475 mV – bottle 250 ml
The Meytec buffer solution RX 475 mV bottle 250 ml is a redox calibration liquid for ORP meters and controllers used in pools, spas and water treatment systems. It provides a stable reference value around 475 mV so you can check and adjust electronic probes and keep oxidation reduction potential readings accurate over time.
Use of an RX 475 mV redox buffer solution
ORP probes gradually drift as the electrode surface ages and is exposed to treated water, chemicals and temperature changes. Calibrating or verifying with Meytec buffer solution RX 475 mV allows you to correct this drift in the typical working zone for disinfected pool water, where redox is often used to modulate chlorine dosing.
A well defined 475 mV reference gives a reliable control point for instruments that monitor disinfection potential in fresh water. Regular checks with this solution make it easier to detect probe wear early and avoid relying on unstable or inaccurate readings.
250 ml bottle for regular calibration
The Meytec buffer solution RX 475 mV bottle 250 ml is supplied in a practical screw cap bottle designed for repeat use during routine maintenance. The 250 ml content provides enough calibration liquid for numerous checks and adjustments, making it suitable for service technicians and pool operators.
- 250 ml of ready to use RX 475 mV calibration solution.
- Design bottle with secure cap for repeated opening and closing.
- Suitable for handheld ORP testers, fixed controllers and multiparameter meters.
For best preservation of the reference value, only a small working volume should be poured into a clean container for each calibration, and the main bottle should be closed immediately after dispensing.
Calibration and verification of ORP probes
The Meytec buffer solution RX 475 mV bottle 250 ml is compatible with most ORP and redox instruments that accept external calibration standards. It can be used either for full calibration, where the instrument is adjusted to the reference value, or as a verification standard to confirm that probe response remains within acceptable tolerance.
- Mid range reference point for ORP and redox meters used in pool water.
- Helps confirm that probes controlling disinfectant dosing remain accurate.
- Useful for documenting probe performance over time during maintenance.
Always follow the procedure specified in the instrument manual, including the required immersion time, stabilisation criteria and any temperature compensation settings around the 475 mV reference.
Example verification procedure
A quick verification with Meytec RX 475 mV solution can be integrated into regular maintenance routines to check that the probe and meter continue to perform correctly.
- Rinse the ORP probe with clean water and gently dry with a soft cloth.
- Pour a small amount of RX 475 mV solution into a clean container.
- Immerse the probe in the calibration solution and wait for a stable reading.
- Compare the displayed value with 475 mV and adjust if the instrument allows calibration.
If the reading cannot be brought close to the reference value or remains unstable, the probe may require cleaning, regeneration or replacement to restore reliable redox measurement.
Storage and handling recommendations
To keep the Meytec buffer solution RX 475 mV bottle 250 ml within specification, it should be stored in a cool, dry place away from direct sunlight and heat sources. Correct handling reduces contamination and helps maintain the stated reference value for as long as possible.
- Always close the bottle tightly immediately after dispensing.
- Use only clean glass or plastic containers for the working volume.
- Do not pour used calibration solution back into the original bottle.
Combined with regular probe cleaning, correct storage and periodic calibration using this Meytec redox standard, your ORP control systems can deliver stable, dependable disinfection monitoring throughout the swimming season.
