Water Testing & Control

Monitor and manage pool chemistry with test kits, sensors, and controllers.

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    Pentair Rainbow #1 Solution Oto, 8 Ounce - R161046
    SKU: R161046
    $24.10
    $37
    Out of stock
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    Pentair Solution Ph 1 Oz Ph Red Solution 1Oz Pentair - R161094
    Pentair Solution Ph 1 Oz Ph Red Solution 1Oz Pentair - R161094
    SKU: R161094
    $15.80
    $24
    In stock
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    Pentair OTO Replacement Solution, 1 oz - R161025
    Pentair OTO Replacement Solution, 1 oz - R161025
    SKU: R161025
    $16.50
    $25
    In stock
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    Pentair Water Pool and Spa Inc Phenol Red 8OZ Solution #2 - R161286
    SKU: R161286
    $23.95
    $36
    Out of stock
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    Pentair Solution #2 pH Test, 1 oz | R161178
    Pentair Solution #2 pH Test, 1 oz - R161178
    SKU: R161178
    $16
    $24
    In stock
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    Pentair Rainbow OTO Replacement Solution #2, 1/2 oz - R161004
    Pentair Rainbow OTO Replacement Solution #2, 1/2 oz - R161004
    SKU: R161004
    $17.04
    $26
    In stock
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    Pentair Solution #3 Acid Demand Replacement, 1 oz | R161185
    Pentair Solution #3 Acid Demand Replacement, 1 oz - R161185
    SKU: R161185
    $15.78
    $24
    In stock
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    Pentair Water Pool and Spa Inc Phenol Red 1OZ Solution #2 - R161180
    Pentair Water Pool and Spa Inc Phenol Red 1OZ Solution #2 - R161180
    SKU: R161180
    $17.25
    $26
    In stock
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    Pentair Water Pool and Spa Inc Gal Cyanuric Acid Reagent - R161626
    Pentair Water Pool and Spa Inc Gal Cyanuric Acid Reagent - R161626
    SKU: R161626
    $88.82
    $134
    In stock
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    Rainbow Solution #3B, 1 Ounce | R161202
    Pentair Rainbow Solution #3B, 1 Ounce - R161202
    SKU: R161202
    $15.65
    $24
    In stock
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    Pentair Rainbow pH Replacement Solution w/ Chlorine Neutralizer, 1/2 oz - R161018
    Pentair Rainbow pH Replacement Solution w/ Chlorine Neutralizer, 1/2 oz - R161018
    SKU: R161018
    $17.04
    $26
    In stock
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    Pentair Water Pool and Spa Inc Professional Test Lab Pro 11 - R151716
    Pentair Water Pool and Spa Inc Professional Test Lab Pro 11 - R151716
    SKU: R151716
    $87.14
    $131
    Out of stock
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    Pentair Water Pool and Spa Inc Cyanuric Acid Tablet - R161591
    SKU: R161591
    $11.79
    $18
    Out of stock
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    Pentair Solution Ph 16 Oz - R161126
    SKU: R161126
    $24.66
    $37
    In stock
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    Rainbow #2 Solution Oto, 16 Ounce | R161056
    Pentair Rainbow #2 Solution Oto, 16 Ounce - R161056
    SKU: R161056
    $24.66
    $37
    In stock
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    Pentair Water Pool and Spa Inc #752 2-IN-1 Test Kit - R151083
    Pentair Water Pool and Spa Inc #752 2-IN-1 Test Kit - R151083
    SKU: R151083
    $43.29
    $65
    Out of stock
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    Pentair Water Pool and Spa Inc Dpd #1 Tablet - R161576
    Pentair Water Pool and Spa Inc Dpd #1 Tablet - R161576
    SKU: R161576
    $16.29
    $25
    In stock
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    Pentair Water Pool and Spa Inc Water Hardness .5OZ Solution #7 - R161642
    Pentair Water Pool and Spa Inc Water Hardness .5OZ Solution #7 - R161642
    SKU: R161642
    $14.40
    $22
    In stock
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    Pentair Sink/Float Tube Thermometer #136 ABS E-Z Read
    Pentair Water Pool and Spa Inc Sink/float Tube Thermometer #136 ABS E-Z Read - R141200
    SKU: R141200
    $32
    $54
    In stock
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    Super-Pro Test Kit Refill PS102CS .5OZ Oto/ Phenol - K102CBX/SCP
    SKU: K102CBX/SCP
    $17.28
    $26
    Out of stock
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    Poolmaster Solution #2 Phenol Red PS9752 1OZ Pro Series - 22392
    SKU: 22392
    $16.38
    $25
    In stock
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    Poolmaster 3-WAY Test Kit with Case PS899 Supreme Series - 22340
    SKU: 22340
    $29.07
    $44
    In stock
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    Poolmaster .5OZ Phenol Red Reagent PS899PHE Supreme Series - 24251
    SKU: 24251
    $15.12
    $23
    Out of stock
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    Poolmaster Solution #1 Oto PS9751 1OZ Pro Series - 22391
    SKU: 22391
    $16.38
    $25
    In stock