Photo 1 of YINMIK 6 in 1 pH PPM H2 EC ORP Temp Water Quality Meter - Digital pH PPM ORP EC Monitor for Hydroponic & Kombucha

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Photo 1 of YINMIK 6 in 1 pH PPM H2 EC ORP Temp Water Quality Meter - Digital pH PPM ORP EC Monitor for Hydroponic & Kombucha