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Q: how to calibrate without the liquid

gevraagd door TouTaver op 2019-11-20 08:21:20

BG551545547 You need liquid to calibrate but it is not stable once calibrated , my unit is faulty after 100 days . LCD doesn’t work on PH meter

2021-03-25 03:52:18 Nuttig (0)
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Q: How far can measure

gevraagd door Chirattiphong Wave Promphithak op 2019-08-02 06:14:21

BG551545547 My unit is faulty after 100 days

2021-03-25 03:51:20 Nuttig (0)
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antwoorden (2)