industrial emission control air filters for use with chemical process and reactor vents; filter change indicators used in connection with industrial water and air filters to indicate the saturation and exhaustion of the filters

'air':4,24 'chang':15 'chemic':9 'connect':19 'control':3 'emiss':2 'exhaust':31 'filter':5,14,25,34 'indic':16,27 'industri':1,21 'process':10 'reactor':12 'satur':29 'use':7,17 'vent':13 'water':22

industrial emission control surface wipes impregnated with reagents for use in detection and quantification of toxic chemicals on industrial surfaces; chemical analysis kits for detection and quantification of toxic chemicals in waste water at industrial plants

'analysi':22 'chemic':17,21,30 'control':3 'detect':12,25 'emiss':2 'impregn':6 'industri':1,19,35 'kit':23 'plant':36 'quantif':14,27 'reagent':8 'surfac':4,20 'toxic':16,29 'use':10 'wast':32 'water':33 'wipe':5

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