Description
Meytec buffer solution – RX 475 mV – sachet 20 ml
The Meytec buffer solution RX 475 mV sachet 20 ml is a single use calibration liquid for orp and redox meters used on pool, spa and water
treatment systems. It provides a stable reference at 475 mV so you can check and adjust electronic probes, keeping oxidation reduction
potential readings accurate over time.
Role of a 475 mV redox buffer
Orp and redox probes slowly drift because of ageing, chemical exposure and temperature changes. Calibrating the instrument with a known
Meytec RX 475 mV buffer solution allows you to verify that the probe response is correct in the typical working zone for disinfected pool
water, where orp control is often used to modulate chlorine dosing.
Using a fixed millivolt reference value helps you detect probe wear or contamination early and avoid relying on measurements that no
longer reflect the true disinfection potential of the water.
Single use 20 ml sachet format
The Meytec buffer solution RX 475 mV sachet 20 ml is supplied in a sealed single dose pouch. The buffer is opened only at the moment of
calibration, which limits contact with air and contaminants that could change the reference value in multi use bottles.
- Individual 20 ml volume for one calibration or check.
- Factory sealed to preserve a stable 475 mV reference.
- Compact and easy to carry for on site service work.
Using a fresh sachet for each calibration supports repeatable results, especially where the orp signal is used to control automatic
dosing pumps in residential or small commercial pools.
Use with orp and redox meters
This Meytec RX 475 mV buffer solution is compatible with most handheld orp testers, redox controllers and multi parameter instruments
that accept external calibration solutions. It is suitable for systems that monitor disinfectant potential in chlorinated or brominated
water.
- Calibration liquid for electronic orp and redox meters.
- Helps verify the response of probes used for pool disinfection control.
- Useful for periodic checks of automatic dosing installations.
Always follow the calibration or verification procedure given by the instrument manufacturer, including any steps for temperature
compensation and immersion time in the buffer.
Example verification procedure
Depending on the device, the RX 475 mV buffer can be used either for full calibration or for a simple verification of probe accuracy. A
typical quick check uses the sachet to confirm that the meter reading remains close to the stated 475 mV value.
- Rinse the orp probe with clean water and gently dry.
- Open the Meytec RX 475 mV sachet 20 ml and pour into a clean cup if needed.
- Immerse the probe and wait for the reading to stabilise.
- Compare the displayed value to 475 mV and adjust only if allowed by the device.
If the reading deviates significantly from the reference and cannot be corrected, the probe may be contaminated or near the end of its
service life and should be cleaned or replaced.
Storage and handling recommendations
To maintain its certified reference value, the Meytec buffer solution RX 475 mV sachet 20 ml should be stored in a cool, dry place away
from direct sunlight. Each sachet is intended for single use, and any remaining liquid after calibration should be discarded.
- Keep sachets sealed until just before the calibration step.
- Avoid mixing the buffer with pool water or other chemicals.
- Dispose of used sachets and leftover liquid in line with local rules.
Combined with correct probe cleaning and periodic replacement, regular use of Meytec RX 475 mV buffer solution helps keep redox based
control systems reliable and supports stable water disinfection throughout the season.
