7 way Quickly measure pH, Chlorine and Alkalinity Identify any necessary chemical adjustments Reliable and accurate readings Easy to follow instructions Measures chlorine, PH and alkalinity: Measures various quality levels of swimming pool or spa water to indicate what chemicals are needed to prevent harmful bacteria entering your water Directions: Dip strip and remove immediately, hold strip level for 15 seconds, use simple-to-use guide on bottle to read the results
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