pH Buffer Solution Powder should be used to help keep your electronic pH meter calibrated. Individual packets help to keep solution fresh until use.
pH Calibration Buffer Powder pH4.00
How to use
Completely empty the powder into a clean glass jar
Add 250mL of distilled or deionized water
Stir until the powder has completely dissolved
pH Calibration Buffer Powder pH4.00
60,00 EGP
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