chemical feeding equipment; namely, chlorinators, sulfonators, ammoniators and chlorine evaporators; chemical analyzing instruments for amperometrically measuring and indicating the concentration of a chemical in a fluid supply; ultraviolet disinfection equipment for the treatment of water and waste waters, and parts and sub-assemblies for all of the foregoing

'ammoni':7 'amperometr':15 'analyz':12 'assembl':44 'chemic':1,11,23 'chlorin':5,9 'concentr':20 'disinfect':29 'equip':3,30 'evapor':10 'feed':2 'fluid':26 'forego':49 'indic':18 'instrument':13 'measur':16 'name':4 'part':40 'sub':43 'sub-assembl':42 'sulfon':6 'suppli':27 'treatment':33 'ultraviolet':28 'wast':37 'water':35,38

FISCHER & PORTER FP

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