PPM

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NU Aqua 5-Stage Under Sink Reverse Osmosis Water Filter System – 100 GPD RO Filtration w/Faucet & Tank – PPM Meter – 100GPD Undersink – Home & Kitchen Drinking Water

Price: (as of – Details) From the brand 120-DAY HOME TRIAL & 3 YEAR WARRANTY: If you’re not satisfied with

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SC8 NDIR CO2 Sensor Module 0–5000 ppm ±50 ppm +5% Accuracy UART + Analog Output -10°C to +50°C Operating Temp Compatible for LabVIEW

£13.36

Price: (as of – Details) Product description Product Parameters Input Voltage 3.3–5.5V DC (Wide Range, 5V Typical) Measurement Range 0–5000

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TopTes PT-990 Rechargeable Gas Leak Detector with 11 inch Probe, Detection Range 0-10000 ppm, Data Logging & 3 Types Alarm, Natural Gas Detector for Propane, Methane for Industrial & Home – Orange

£89.14

Price: (as of – Details) Product description Quick Response & High Precision：The PT-990 gas leak detector is equipped with a

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