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Seven-in-One Water Quality Test Pen C- 600 Portable Water Quality Test Pen Salinity Skin Analyzer PH Test Pen
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1, ph 0-14
2. TDS value 0-200000ppm
3. EC value 0-200000%/cm
4,Salinity Salinity 0-20%
5. ORP negative potential ± 1999MV
6. H2 hydrogen-rich 0-100000ppb
7. S.G sea water proportion 1.000-1.222
8, temperature 0-60 ℃
