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- New HM Digital TDS-EZ PPM Meter/Tester - Water Quality Test - TDS MonitorOpens in a new window or tabBrand new£16.40directive21 (50,476) 98%+ £14.34 postagefrom United States85 sold
- New HM Digital COM-100 Waterproof Combo Meter for EC, TDS and TemperatureOpens in a new window or tabBrand new£57.86directive21 (50,476) 98%+ £17.43 postagefrom United States
- New HM Digital COM-300 Waterproof Professional Series pH/EC/TDS/Temp MeterOpens in a new window or tabBrand new£120.59directive21 (50,476) 98%+ £19.28 postagefrom United StatesAlmost gone18 sold
- HM Digital COM-100 Waterproof Combo Meter for EC, TDS and TemperatureOpens in a new window or tabBrand new£62.72directive21 (50,476) 98%+ £17.58 postagefrom United States