HOLDPEAK Ammonia Gas Meter Detector, NH3 Gas Monitor Sensor with Range 0-100 ppm & 0.1ppm Resolution, Portable Air Quality Detector Meter for Farm

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Ammonia Gas Detector NH3 Gas Temp Tester Rechargeable Colored LCD Display 100ppm

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Buy Wholesale China 535g Ammonia Gas Detector, Professional Air Quality Meter Nh3 Tester Measures Ammonia, Temperature & Humidity & Gas Detector at USD 113

Portable Ammonia Gas Detector, Handheld NH3 Meter, NH3/ Temperature/Humidity Monitor, Ammonia Analyzer, Gas Monitor, Air Quality Monitor : Industrial & Scientific