One set contains two sachets (1 X pH 6.86 and 1 X pH 4.00)
- PH Buffer Powder Sachet for PH Calibration
- This pH buffer sachets are ideal for calibration and to test the accuracy of pH meters
- pH 6.86 and pH 4.00 buffer sachets
- Easy to use - just empty the contents into 250ml of water
- Long shelf life (sachets can be stored for many years)
- Sachets are single use
Instructions:
- Empty one sachet entirely (either pH 6.86 or pH 4.00) into 250ml of water (tap water is ok - distilled water is preferable) at room temperature.
- Stir solution until powder dissolved and insert pH meter for calibration
- Method of calibration will vary depending on pH meter. Refer to your manual for instructions
- Use both pH 6.86 and pH 4.00 for a more accurate (or two point) calibration.
- NB: Only one sachet per 250ml of water. Use separate water for each sachet.
- Discard water after use. Sachets are single use only