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2011hyf

2011hyf

by 2011hyf

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1 year ago

pHep 4 and pHep 5 Calibration

Calibrating the pHep 4 and pHep 5 pH testers.

2011hyf 2011hyf commented:

Hi, once i enter into the calibration mode, after showing 7.0 USE for few second, it directly appear as 10.0 REC. Since i would like to calibrate for 4.0 instead of 10.0, may i know how to make it to show 4.0 REC instead of 10.0 REC?

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