chemical indicator sticks, namely, paper test strips used to measure water samples for free chlorine, high free chlorine, total chlorine, iodine, iron (Fe+2/Fe+3), copper (Cu+1/Cu+2), peroxide (H2O2), nitrate nitrogen, nitrite nitrogen, pH, total hardness, and total alkalinity

'+1':29 '+2':24,31 '+3':26 '/cu':30 '/fe':25 'alkalin':43 'chemic':1 'chlorin':15,18,20 'copper':27 'cu':28 'fe':23 'free':14,17 'h2o2':33 'hard':40 'high':16 'indic':2 'iodin':21 'iron':22 'measur':10 'name':4 'nitrat':34 'nitrit':36 'nitrogen':35,37 'paper':5 'peroxid':32 'ph':38 'sampl':12 'stick':3 'strip':7 'test':6 'total':19,39,42 'use':8 'water':11

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