Ph meter calibration buffer powder
Do you want to calibrate or re-calibrate ph meter? Here are the appropriate buffer powder you need. They are
Red: pH 4.01 buffer powder
Green: pH 6.86 buffer powder
Blue: pH 9.18 buffer powder
How to Prepare the Solutions
Prepare three clean glass containers.
Measure 250 mL of distilled water per containers.
Empty one packet/sachet into each container.
Stir gently until completely dissolved.
How to Calibrate Your Meter
Turn on your digital pH meter.
Rinse the probe in clean water.
Submerge the probe part only in pH 6.86 solution.
Wait for the reading to stabilize.
Press the CAL button or use screw driver to calibrate.
Repeat steps for pH 4.01 or 9.18.
Keep solutions at 25°C (77°F) for accuracy.
