RKI Instruments SC-04 Single Gas Monitor, Nitrogen Dioxide (NO2) 0-20 ppm, 73-0073 related_filter-bags-2-prm-liquid-filter-bags-polyester-felt-with-polypropylene-rings-50-micron or S37C UV water purifiers

or S37C UV water purifiers

Their enclosures are constructed to prevent entry of explosive gases

WELL VAULT - 24 X 24 X 24 INCH WITH BOLT-DOWN LID

​Zero Drift

Waterra SS-19 Stainless Steel Foot Valve

RKI Instruments SC-04 Single Gas Monitor, Nitrogen Dioxide (NO2) 0-20 ppm, 73-0073 related_filter-bags-2-prm-liquid-filter-bags-polyester-felt-with-polypropylene-rings-50-micron or S37C UV water purifiersRKI Instruments SC 04, Nitrogen Dioxide (NO2) 0 20 ppm, alkaline batteries with alligator clip The 04 Series single gas monitor is designed to operate for many years with field replaceable sensors and filters. The 04 Series can be operated continuously for up to 9,000 hours on (2) AAA size alkaline batteries (depending on model). The 04 Series has 3 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and