portable calibration gases for air monitoring instrumentation and continuous emissions monitoring systems, namely, hydrogen sulfide, sulfur dioxide, carbon dioxide, methane, oxygen, nitrogen, nitric oxide, propane and mixtures thereof

'air':5 'calibr':2 'carbon':18 'continu':9 'dioxid':17,19 'emiss':10 'gase':3 'hydrogen':14 'instrument':7 'methan':20 'mixtur':27 'monitor':6,11 'name':13 'nitric':23 'nitrogen':22 'oxid':24 'oxygen':21 'portabl':1 'propan':25 'sulfid':15 'sulfur':16 'system':12 'thereof':28

equipment for dispensing portable calibration gases for air monitoring instrumentation and continuous emissions monitoring systems, namely, confined space entry instrumentation and explosimeters

'air':8 'calibr':5 'confin':17 'continu':12 'dispens':3 'emiss':13 'entri':19 'equip':1 'explosimet':22 'gase':6 'instrument':10,20 'monitor':9,14 'name':16 'portabl':4 'space':18 'system':15

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