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$725.99
Applied Membranes Inc. Silt Density Index Water-Testing Kit, SDI Portable Water Test Kit With On-Site Carrying Case And 2 SDI Test Filters
Amazon.com
16
Free shipping
$725.99
Applied Membranes Inc. Silt Density Index Water-Testing Kit, SDI Portable Water Test Kit With On-Site Carrying Case And 2 SDI Test Filters
Amazon.com
16
$18.99
APEC TDS Meter Digital Water Quality TDS Test Kit Meter With Carrying Case, 0 To 1999 Ppm Measurement Range, 1 Ppm Resolution, +/- 2% Readout Accuracy
Amazon.com
417
$18.99
APEC TDS Meter Digital Water Quality TDS Test Kit Meter With Carrying Case, 0 To 1999 Ppm Measurement Range, 1 Ppm Resolution, +/- 2% Readout Accuracy
Amazon.com
417
$369.00
Ultimate Home Water Test Kit For Drinking Water | Tests For 250+ Parameters Like Lead, Bacteria, And Vocs | EPA Certified Well Or Tap Water Test
Amazon.com
13
Free shipping
$369.00
Ultimate Home Water Test Kit For Drinking Water | Tests For 250+ Parameters Like Lead, Bacteria, And Vocs | EPA Certified Well Or Tap Water Test
Amazon.com
13
$130.62
APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
Amazon.com
837
Free shipping
$130.62
APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
Amazon.com
837
$31.93
$45.00
Hach Free & Total Chlorine Test Strips, 0-10 Mg/L, Chlorine Testing, Water Quality Test Strips, Accurate Chlorine Measurement, Easy-To-Use Chlorine
Amazon.com
259
Free shipping
29% off
$31.93
$45.00
Hach Free & Total Chlorine Test Strips, 0-10 Mg/L, Chlorine Testing, Water Quality Test Strips, Accurate Chlorine Measurement, Easy-To-Use Chlorine
Amazon.com
259
$38.00
Cleveland 115036 Water Quality Test Kit
WebstaurantStore
$38.00
Cleveland 115036 Water Quality Test Kit
WebstaurantStore
$66.87
Pentair Omnifilter Mail-In Home Water Test Kit
Amazon.com
24
Free shipping
$66.87
Pentair Omnifilter Mail-In Home Water Test Kit
Amazon.com
24
$12.49
Hydrion Water Hardness Test Kit
WebstaurantStore
6
$12.49
Hydrion Water Hardness Test Kit
WebstaurantStore
6
$11.99
API High Range Ph Test Kit - Marine & Alkaline
AquaticMotiv
$11.99
API High Range Ph Test Kit - Marine & Alkaline
AquaticMotiv
$49.97
$84.97
Water Quality Tester
Until Times Up
41% off
$49.97
$84.97
Water Quality Tester
Until Times Up
$711.00
Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, MR, Mid-Range, Waterproof, Portable, Free & Total Chlorine Photometer, For Reliable Water
Amazon.com
8
Free shipping
$711.00
Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, MR, Mid-Range, Waterproof, Portable, Free & Total Chlorine Photometer, For Reliable Water
Amazon.com
8
$34.25
Hach Total Hardness Water Test Kit Model 5-B 145300
Core & Main
1K+
$34.25
Hach Total Hardness Water Test Kit Model 5-B 145300
Core & Main
1K+
$48.77
Taylor Water Technologies - Basic Liquid Dpd Test Kit High Range Nsf
Pool Spa Supplies
$48.77
Taylor Water Technologies - Basic Liquid Dpd Test Kit High Range Nsf
Pool Spa Supplies
$224.95
$281.19
Hardness, Iron, Ph, Chlorine, & TDS Field Analysis Water Test Kit
US Water Systems
20% off
$224.95
$281.19
Hardness, Iron, Ph, Chlorine, & TDS Field Analysis Water Test Kit
US Water Systems
$46.49
Pentair 4-In-1 OTO Test Kit - Chlorine, Ph, Acid Demand, & Total Alkalinity R151186
PoolZoom.com
12
$46.49
Pentair 4-In-1 OTO Test Kit - Chlorine, Ph, Acid Demand, & Total Alkalinity R151186
PoolZoom.com
12
$146.90
Taylor Service Complete Pool Water Test Kit FAS-DPD K-2006C
PoolZoom.com
915
$146.90
Taylor Service Complete Pool Water Test Kit FAS-DPD K-2006C
PoolZoom.com
915
$59.00
$105.23
Everpure EV433940 Water Testing Kit Tests Carbonate Hardness For Beverage Equipment | Commercial Restaurant Supply
RestaurantSupply.com
43% off
$59.00
$105.23
Everpure EV433940 Water Testing Kit Tests Carbonate Hardness For Beverage Equipment | Commercial Restaurant Supply
RestaurantSupply.com
$263.90
Solaxx Safedip Digital Water Tester MET01A
PoolZoom.com
$263.90
Solaxx Safedip Digital Water Tester MET01A
PoolZoom.com
$147.95
$184.94
Hardness Iron & Ph Field Analysis Water Test Kit
US Water Systems
20% off
$147.95
$184.94
Hardness Iron & Ph Field Analysis Water Test Kit
US Water Systems
$9.95
$12.44
Consumer Chlorine Test Kit For Water Treatment | 2501
US Water Systems
20% off
$9.95
$12.44
Consumer Chlorine Test Kit For Water Treatment | 2501
US Water Systems
$90.36
Taylor Complete Chlorine Pool & Spa Water Test Kit FAS-DPD K-2006-6
PoolZoom.com
Cost-Effective · Effortless Usage · Superior Quality
$90.36
Taylor Complete Chlorine Pool & Spa Water Test Kit FAS-DPD K-2006-6
PoolZoom.com
Cost-Effective · Effortless Usage · Superior Quality
$142.00
Hach Chlorine (Free & Total) Test Kit Model CN-70 1454200
Core & Main
$142.00
Hach Chlorine (Free & Total) Test Kit Model CN-70 1454200
Core & Main
$219.00
Hach Chlorine (Free & Total) Test Kit Model CN-80 2129000
Core & Main
$219.00
Hach Chlorine (Free & Total) Test Kit Model CN-80 2129000
Core & Main
$169.00
America's Premier Quality Water Test - Waterlogix Basic
US Water Systems
60-day returns (most items)
$169.00
America's Premier Quality Water Test - Waterlogix Basic
US Water Systems
60-day returns
$7.95
$9.94
Consumer Ph Test Kit For Water Treatment | 23053
US Water Systems
20% off
$7.95
$9.94
Consumer Ph Test Kit For Water Treatment | 23053
US Water Systems
$1,961.31
HK600-15 Parker Velcon Hydrokit Water In Fuel Test Kit, 600-Test, 15 PPM
Valin Process Control Solutions
$1,961.31
HK600-15 Parker Velcon Hydrokit Water In Fuel Test Kit, 600-Test, 15 PPM
Valin Process Control Solutions
$192.00
Hach Chlorine (Free & Total) & Ph Test Kit Model CN-67 1411100
Core & Main
$192.00
Hach Chlorine (Free & Total) & Ph Test Kit Model CN-67 1411100
Core & Main
$115.00
Supelco Total Hardness Test, Colorimetric, Water Hardness 5-25 °D, For Use With Mquant Stripscan App, Water Hardness 6-31 °E, Water Hardness 9-45 °F
Sigma-Aldrich
$115.00
Supelco Total Hardness Test, Colorimetric, Water Hardness 5-25 °D, For Use With Mquant Stripscan App, Water Hardness 6-31 °E, Water Hardness 9-45 °F
Sigma-Aldrich
$84.35
$165.51
Advanced Home Water Test Kit | Well Or City | EPA Certified Drinking Water Labs | 1 Best Home Water Test - Wirecutter
shop.chooserevcats
49% off
$84.35
$165.51
Advanced Home Water Test Kit | Well Or City | EPA Certified Drinking Water Labs | 1 Best Home Water Test - Wirecutter
shop.chooserevcats
$84.35
$165.51
Advanced Home Water Test Kit | Well Or City | EPA Certified Drinking Water Labs | 1 Best Home Water Test - Wirecutter
umlondolozi
49% off
$84.35
$165.51
Advanced Home Water Test Kit | Well Or City | EPA Certified Drinking Water Labs | 1 Best Home Water Test - Wirecutter
umlondolozi
$239.98
Lamotte Colorq 2X PRO 7 Digital Pool Water Test Kit 2086
PoolZoom.com
$239.98
Lamotte Colorq 2X PRO 7 Digital Pool Water Test Kit 2086
PoolZoom.com
$169.00
$199.00
Water Test Kit + Tannins
SpringWell Water Filtration Systems
180-day returns (most items)
15% off
$169.00
$199.00
Water Test Kit + Tannins
SpringWell Water Filtration Systems
180-day returns
$106.00
Supelco Total Hardness Test, Colorimetric, Water Hardness 3-21 °D, Water Hardness 4-26 °E, Water Hardness 5-37 °F
Sigma-Aldrich
$106.00
Supelco Total Hardness Test, Colorimetric, Water Hardness 3-21 °D, Water Hardness 4-26 °E, Water Hardness 5-37 °F
Sigma-Aldrich
$108.00
Hach Chlorine (Free & Total) Color Disc Test Kit Model CN-66 223101
Core & Main
$108.00
Hach Chlorine (Free & Total) Color Disc Test Kit Model CN-66 223101
Core & Main
$36.74
$48.99
Fritz Aquarium Water Master Test Kit
Chewy.com
25% off
$36.74
$48.99
Fritz Aquarium Water Master Test Kit
Chewy.com
$10.95
$13.69
Consumer Hardness Test Kit For Water Treatment | 23052
US Water Systems
60-day returns (most items)
20% off
$10.95
$13.69
Consumer Hardness Test Kit For Water Treatment | 23052
US Water Systems
60-day returns
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    Shop water testing kit

    Sponsored
    About our ads
    $725.99
    Applied Membranes Inc. Silt Density Index Water-Testing Kit, SDI Portable Water Test Kit With On-Site Carrying Case And 2 SDI Test Filters
    Amazon.com
    16
    Free shipping
    $725.99
    Applied Membranes Inc. Silt Density Index Water-Testing Kit, SDI Portable Water Test Kit With On-Site Carrying Case And 2 SDI Test Filters
    Amazon.com
    16
    $18.99
    APEC TDS Meter Digital Water Quality TDS Test Kit Meter With Carrying Case, 0 To 1999 Ppm Measurement Range, 1 Ppm Resolution, +/- 2% Readout Accuracy
    Amazon.com
    417
    $18.99
    APEC TDS Meter Digital Water Quality TDS Test Kit Meter With Carrying Case, 0 To 1999 Ppm Measurement Range, 1 Ppm Resolution, +/- 2% Readout Accuracy
    Amazon.com
    417
    $369.00
    Ultimate Home Water Test Kit For Drinking Water | Tests For 250+ Parameters Like Lead, Bacteria, And Vocs | EPA Certified Well Or Tap Water Test
    Amazon.com
    13
    Free shipping
    $369.00
    Ultimate Home Water Test Kit For Drinking Water | Tests For 250+ Parameters Like Lead, Bacteria, And Vocs | EPA Certified Well Or Tap Water Test
    Amazon.com
    13
    $130.62
    APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
    Amazon.com
    837
    Free shipping
    $130.62
    APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
    Amazon.com
    837
    $31.93
    $45.00
    Hach Free & Total Chlorine Test Strips, 0-10 Mg/L, Chlorine Testing, Water Quality Test Strips, Accurate Chlorine Measurement, Easy-To-Use Chlorine
    Amazon.com
    259
    Free shipping
    29% off
    $31.93
    $45.00
    Hach Free & Total Chlorine Test Strips, 0-10 Mg/L, Chlorine Testing, Water Quality Test Strips, Accurate Chlorine Measurement, Easy-To-Use Chlorine
    Amazon.com
    259
    $38.00
    Cleveland 115036 Water Quality Test Kit
    WebstaurantStore
    $38.00
    Cleveland 115036 Water Quality Test Kit
    WebstaurantStore
    $66.87
    Pentair Omnifilter Mail-In Home Water Test Kit
    Amazon.com
    24
    Free shipping
    $66.87
    Pentair Omnifilter Mail-In Home Water Test Kit
    Amazon.com
    24
    $12.49
    Hydrion Water Hardness Test Kit
    WebstaurantStore
    6
    $12.49
    Hydrion Water Hardness Test Kit
    WebstaurantStore
    6
    $11.99
    API High Range Ph Test Kit - Marine & Alkaline
    AquaticMotiv
    $11.99
    API High Range Ph Test Kit - Marine & Alkaline
    AquaticMotiv
    $49.97
    $84.97
    Water Quality Tester
    Until Times Up
    41% off
    $49.97
    $84.97
    Water Quality Tester
    Until Times Up
    $711.00
    Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, MR, Mid-Range, Waterproof, Portable, Free & Total Chlorine Photometer, For Reliable Water
    Amazon.com
    8
    Free shipping
    $711.00
    Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, MR, Mid-Range, Waterproof, Portable, Free & Total Chlorine Photometer, For Reliable Water
    Amazon.com
    8
    $34.25
    Hach Total Hardness Water Test Kit Model 5-B 145300
    Core & Main
    1K+
    $34.25
    Hach Total Hardness Water Test Kit Model 5-B 145300
    Core & Main
    1K+
    $48.77
    Taylor Water Technologies - Basic Liquid Dpd Test Kit High Range Nsf
    Pool Spa Supplies
    $48.77
    Taylor Water Technologies - Basic Liquid Dpd Test Kit High Range Nsf
    Pool Spa Supplies
    $224.95
    $281.19
    Hardness, Iron, Ph, Chlorine, & TDS Field Analysis Water Test Kit
    US Water Systems
    20% off
    $224.95
    $281.19
    Hardness, Iron, Ph, Chlorine, & TDS Field Analysis Water Test Kit
    US Water Systems
    $46.49
    Pentair 4-In-1 OTO Test Kit - Chlorine, Ph, Acid Demand, & Total Alkalinity R151186
    PoolZoom.com
    12
    $46.49
    Pentair 4-In-1 OTO Test Kit - Chlorine, Ph, Acid Demand, & Total Alkalinity R151186
    PoolZoom.com
    12
    $146.90
    Taylor Service Complete Pool Water Test Kit FAS-DPD K-2006C
    PoolZoom.com
    915
    $146.90
    Taylor Service Complete Pool Water Test Kit FAS-DPD K-2006C
    PoolZoom.com
    915
    $59.00
    $105.23
    Everpure EV433940 Water Testing Kit Tests Carbonate Hardness For Beverage Equipment | Commercial Restaurant Supply
    RestaurantSupply.com
    43% off
    $59.00
    $105.23
    Everpure EV433940 Water Testing Kit Tests Carbonate Hardness For Beverage Equipment | Commercial Restaurant Supply
    RestaurantSupply.com
    $263.90
    Solaxx Safedip Digital Water Tester MET01A
    PoolZoom.com
    $263.90
    Solaxx Safedip Digital Water Tester MET01A
    PoolZoom.com