CY-12C Oxygen Concentration Tester Meter Detector Analyzer Oxygen Purity Tester Gas Measurement
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Old tool of my grandfather's no not exactly sure how it works but I've put batteries in it and it seems to work ok. Reads room level and if blown into etc it will adjust. good clean condition trusted brand
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AZ86021 Digital Dissolved Oxygen Detector Oxygen Content Meter PH Tester Water Quality Tester
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NEW YSI MODEL 58 OXYGEN METER 115V (NO PROBE) NEW, NO BOXÂ B2/10 rb/BB.
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Shock Proof Oxygen Pressure Reducer YQY-08 Oxygen Meter High Pressure Reducing Valve Pressure
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YSI DO200A CC-04 KIT w/ Hand Held Dissolved Oxygen Meter, 4M Cable Assy, DO Carrying Case, 9V battery included, DO Range 0-20mg/L
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Shock Proof Oxygen Pressure Reducer YQY-08 Oxygen Meter High Pressure Reducing Valve Pressure
Aliexpress UK
W/O Cable Cords. W/O One Rubber Stopper On Bottom. Probe 8 Pin/F Connection.
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Gas Detector Meter Oxygen O2 Carbon Monoxide CO H2S Ex Combustible Gas Analyzer Leak Detector Air
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Parts Only.
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SM1 Single/TRM1 Triple TDS Meter Online Water Quality Tester Digital Salinity Dissolved Oxygen
Aliexpress UK
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Yieryi Hydrogen Water Tester Monitor 4 in 1 H2 PH ORP TEMP Meter Reactive Oxygen Analyzer ATC
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Both the display and keypad are backlit.
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Digital Dissolved Oxygen Meter D09100 Professional Dissolved Oxygen Analyzer Oxygen Concentration
Aliexpress UK