Chemical analysis kit for testing swimming pool water; Chemical test paper; Litmus paper; Reagent bearing test strips for testing swimming pool water; Shock treatment chemicals for use in swimming pools and spas; Test paper, chemical; Water purifying chemicals for swimming pools; Water treatment chemicals for use in swimming pools and spas

'analysi':2 'bear':15 'chemic':1,9,25,35,38,44 'kit':3 'litmus':12 'paper':11,13,34 'pool':7,21,30,41,49 'purifi':37 'reagent':14 'shock':23 'spas':32,51 'strip':17 'swim':6,20,29,40,48 'test':5,10,16,19,33 'treatment':24,43 'use':27,46 'water':8,22,36,42

TRUE DIRECTION

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