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pH Standard. 7.0 Buffer. 230 ml (MA9007) Our Price: $9.95		TDS Standard: 1382ppm / 230 ml (MA9062) Our Price: $9.95		Colorimetric pH Test Kit Our Price: $12.95



Pocket Microscope 30X with light Our Price: $14.95		Meter-PHTestKit - Colorimetric pH Test Kit Our Price: $14.95		HM Digital TDS-80 Economy Meter for EC, TDS and Temperature Our Price: $45.99



HM Digital PH & Temperature Meter-Economy Our Price: $59.95		Milwaukee TDS Waterproof Meter Our Price: $69.95		HM Digital Professional Waterproof Meter for EC, TDS and Temperature Our Price: $75.99



HM Digital / #pH-200 / Professional pH HM Digital pH Meter Our Price: $99.95