This digital pen style pH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage etc. Please be sure to calibrate with buffer solution before use.
-- Immerse the tester up to the maximum immersion level in the PH 4 or 6.86 buffer solution.
-- Allow the reading to stablilize and using the small screwdriver adjust the calibration trimmer to reading 6.9
-- Keep away from Children. In case of skin contact, rinse with water.
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