Essentials LAB Buffer 4 and 7 is an ideal solution for calibration of pH meters. Regular calibration will keep your pH meter reading accurately.
The performance of a pH electrode or pH meter will change with time due to aging because as the electrode is used its coating degrades, to ensure it is working correctly, regular calibration is a must. If you are using your pH meter daily, you should calibrate it at least once a week.
For accurate 2-point calibration use PH Buffer 4 and then Buffer 7. Ensure that your pH meter and the Buffer solutions are at similar temperatures, by keeping them in the same place for a while. Shake the bottle before use. Always pour a small amount into another container to test pH, and do not place your pH probe directly into the bottle. This will avoid contamination of the Buffer fluid in the bottle and will maintain its accuracy. After use, discard the solution used for calibration, and never put it back into the bottle. Follow the calibration instructions provided with your pH Meter.
- Highly accurate pH4 and pH7 solution
- Ensures that your pH meter is reading correctly
- Acidity level: pH4 / pH7
- Volume: 250ml
Always keep the bottle upright with the cap screwed tight to avoid evaporation or spillage. Store your Buffer fluid at temperatures between 5°C and 25°C, and out of direct sunlight.