pH meters; Digital pH meters; TDS meters being scientific apparatus for measuring chemical levels in water

'apparatus':10 'chemic':13 'digit':3 'level':14 'measur':12 'meter':2,5,7 'ph':1,4 'scientif':9 'tds':6 'water':16

Chemicals for use in purification of water; Reagent bearing test strips for testing swimming pool water

'bear':9 'chemic':1 'pool':15 'purif':5 'reagent':8 'strip':11 'swim':14 'test':10,13 'use':3 'water':7,16

[ Water filtering apparatus; Water filtration pitchers sold empty; Water filtration and purification units and replacement cartridges and filters therefor ]

'apparatus':3 'cartridg':16 'empti':8 'filter':2,18 'filtrat':5,10 'pitcher':6 'purif':12 'replac':15 'sold':7 'therefor':19 'unit':13 'water':1,4,9

HEALTH METRIC

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