WatchGas SST1 Serviceable NH3 Gas Detector SST1-A Accessories FIXED GAS DETECTORS Meets or exceeds ANSI Z87+

Meets or exceeds ANSI Z87+ high impact standard

If in doubt about the size

BW REG-DF-1 Demand Flow Regulator is made to attach to the disposable aluminum canisters of calibration gas

so it works perfectly on finished roofs or the different substrates

WatchGas SST1 Serviceable NH3 Gas Detector SST1-A Accessories FIXED GAS DETECTORS Meets or exceeds ANSI Z87+Ammonia is pungent enough to smell at 5 ppm and by the time you can't smell it anymore, you're above OSHA's exposure limit. Anyone who works around ammonia refrigeration compressor rooms, poultry houses, fertilizer operations, industrial cleaning, chemical facilities knows the paradox: at low concentrations it's obvious, and at dangerous concentrations olfactory fatigue kicks in fast. Workers stop noticing what they're breathing. The WatchGas SST1 A