PH-20W PH meter (pen)'s video
NBCHAOVIDEO87 plays · · 2016-04-05
Qiwei PH-20W pH meter is a pen acidity meter with an accurate measurement of ± 0.1pH, which can measure pH and temperature at the same time. PH-20W pen acidity meter is an external electrode. Accuracy up to ± 0.1pH.
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