Water Testing & Control

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

  • Save 61%
    Taylor Sulfuric Acid .12N Dropper Bottle, 3/4 oz, 24/Pack | R-0009-A-24
    Taylor Sulfuric Acid .12N Dropper Bottle, 3/4 oz | R-0009-A-24
    SKU: R-0009-A-24
    $9.99
    $26
    In stock
  • Save 34%
    Taylor Thiosulfate N/10 Dropper Bottle, 2 oz, 12/Pack | R-0007-C-12
    Taylor Thiosulfate N/10 Dropper Bottle, 2 oz | R-0007-C-12
    SKU: R-0007-C-12
    $15.72
    $24
    In stock
  • Save 61%
    Taylor DPD Reagent #3 Dropper Bottle, 3/4 oz | R-0003-A-24
    Taylor DPD Reagent #3 Dropper Bottle, 3/4 oz | R-0003-A-24
    SKU: R-0003-A-24
    $12.99
    $34
    In stock
  • Save 33%
    Taylor Total Alkalinity Indicator, 2 oz, 12/Pack | R-0008-C-12
    Taylor Total Alkalinity Indicator, 2 oz | R-0008-C-12
    SKU: R-0008-C-12
    $15.30
    $23
    In stock
  • Save 33%
    Swimline Soft Top Theranimal Penguin | 9228
    Swimline Soft Top Theranimal Penguin | 9228
    SKU: 9228
    $24.60
    $37
    In stock
  • Save 35%
    INTERNATIONAL LEISURE PRODUCTS BOAT THERMOMETER 12/CS THERANIMAL SOFT TOP | 9235
    SKU: 9235
    $18.18
    $28
    In stock
  • Save 34%
    SC/SH 104 3/8 X 23 5/8 EC32 C
    SKU: 9245
    $15
    $23
    In stock
  • Save 34%
    SWIMLINE #4 4-IN-1 REAGENT - 1/2 OZ. 1/2 OZ.
    SKU: 8444
    $14.34
    $22
    In stock
  • Save 34%
    SWIMLINE #2 4-IN-1 REAGENT - 1 OZ. 1 OZ.
    SKU: 8442
    $15.66
    $24
    In stock
  • Save 35%
    Swimline Deluxe Chlorine/Bromine/pH Two-way Test Kit | 8420
    Swimline Deluxe Chlorine/Bromine/pH Two-way Test Kit | 8420
    SKU: 8420
    $15.57
    $24
    In stock
  • Save 34%
    SWIMLINE #1 4-IN-1 REAGENT - 1 OZ. 1 OZ.
    SKU: 8441
    $15.66
    $24
    In stock
  • Save 36%
    SWIMLINE #5 4-IN-1 REAGENT - 1/2 OZ. 1/2 OZ.
    SKU: 8445
    $12.78
    $20
    In stock
  • Save 34%
    Swimline 4-In-1 Test Kit | 8440
    Swimline 4-In-1 Test Kit | 8440
    SKU: 8440
    $26.85
    $41
    In stock
  • Save 34%
    SWIMLINE #3 4-IN-1 REAGENT - 1 OZ. 1 OZ.
    SKU: 8443
    $15.66
    $24
    In stock
  • Save 34%
    Swimline Oto And Phenol Red Solution, 1/2 Ounce | 8450
    Swimline Oto And Phenol Red Solution, 1/2 Ounce | 8450
    SKU: 8450
    $17.64
    $27
    In stock
  • Save 34% Out of stock
    TAYLOR WATER TECHNOLOGIES LLC TEST STRIPS FC/PH/TA/TH/CYA 100CT 6/PK 5-WAY | SUPER PRO-100
    SKU: SUPER PRO-100
    $28.11
    $43
    Out of stock
  • Save 33%
    POOLMASTER INCORPORATED 5-WAY OTO KIT PRO SERIES | 22361
    SKU: 22361
    $35.09
    $53
    In stock
  • Save 33%
    POOLMASTER INCORPORATED DPD TEST KIT PRO SERIES | 22359
    SKU: 22359
    $35.09
    $53
    In stock
  • Save 34%
    CMP TEST PLUG TOOL (SP1434TP)
    CMP TEST PLUG TOOL (SP1434TP)
    SKU: 25528-000-000
    $30.76
    $47
    In stock
  • Save 33%
    Solaxx SaltDip 2-in-1 Digital Salt Reader | MET30A
    Solaxx SaltDip 2-in-1 Digital Salt Reader | MET30A
    SKU: MET30A
    $241.44
    $363
    In stock
  • Save 34% Out of stock
    Rainbow #1 Solution Oto, 8 Ounce | R161046
    SKU: R161046
    $24.10
    $37
    Out of stock
  • Save 34%
    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
  • Save 34%
    Pentair OTO Replacement Solution, 1 oz | R161025
    Pentair OTO Replacement Solution, 1 oz | R161025
    SKU: R161025
    $16.50
    $25
    In stock
  • Save 33% Out of stock
    PENTAIR WATER POOL AND SPA INC PHENOL RED 24/CS 8OZ SOLUTION #2 | R161286
    SKU: R161286
    $23.95
    $36
    Out of stock