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$11.99
Varify Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test
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5K+
$11.99
Varify Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test
Amazon.com
5K+
$60.99
Hach Total Hardness Test Kit, Model 5-EP, Hardness Testing, Water Quality Test Kit, Accurate Hardness Measurement, Easy-To-Use Hardness Test Kit,
Amazon.com
Free shipping
$60.99
Hach Total Hardness Test Kit, Model 5-EP, Hardness Testing, Water Quality Test Kit, Accurate Hardness Measurement, Easy-To-Use Hardness Test Kit,
Amazon.com
Free shipping
$9.99
Water Hardness Test Kit - Quick And Accurate Water Hardness Test Strips - Hard Water Test Kit With Ebook - Ultimate Test Kit For Water Hardness -
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Water Hardness Test Kit - Quick And Accurate Water Hardness Test Strips - Hard Water Test Kit With Ebook - Ultimate Test Kit For Water Hardness -
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$9.47
Weaqua Doublecheck Water Hardness Test Kit 200 Strips With Sample Cup - Hard Water Testing Strips (0-25 Gpg / 0-425 Ppm)
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665
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Weaqua Doublecheck Water Hardness Test Kit 200 Strips With Sample Cup - Hard Water Testing Strips (0-25 Gpg / 0-425 Ppm)
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665
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Total Water Hardness Test For Pool, Aquarium, And Drinking Water, And Improving Water Softener Efficiency, Hard Water Test Kit
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$31.99
Total Water Hardness Test For Pool, Aquarium, And Drinking Water, And Improving Water Softener Efficiency, Hard Water Test Kit
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Watersafe The Original Water Testing Kit For Drinking Water, Well And Tap Water, Sensitive Lead In Water Test, Bacteria, Hardness, Ph, Nitrates,
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$34.99
Watersafe The Original Water Testing Kit For Drinking Water, Well And Tap Water, Sensitive Lead In Water Test, Bacteria, Hardness, Ph, Nitrates,
Amazon.com
$21.59
All-New 20 in 1 Drinking Water Testing Kit 120 Strips, Home Tap And Well Water Test Kit For Hardness, Lead, Iron, Copper, Chlorine, Fluoride
Amazon.com
715
$21.59
All-New 20 in 1 Drinking Water Testing Kit 120 Strips, Home Tap And Well Water Test Kit For Hardness, Lead, Iron, Copper, Chlorine, Fluoride
Amazon.com
715
$17.99
Clario - 24 in 1 Water Tester For Drinking Water - Water Hardness Test Kit For Aquarium, Well, Pool, And Hot Tub - 100 Complete Drinking Water Test
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124
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Clario - 24 in 1 Water Tester For Drinking Water - Water Hardness Test Kit For Aquarium, Well, Pool, And Hot Tub - 100 Complete Drinking Water Test
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$7.99
Lead Water Test Kit 2025 Upgraded 8 in 1 Home Drinking Water Testing Kits 5Pcs Independent Bag, House Tap And Well Water Hardness Tester, Lead Test
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$7.99
Lead Water Test Kit 2025 Upgraded 8 in 1 Home Drinking Water Testing Kits 5Pcs Independent Bag, House Tap And Well Water Hardness Tester, Lead Test
Amazon.com
$17.99
17 in 1 Water Testing Kits For Drinking Water, 100 Strips + 4 Bacteria Tests, Tap And Well Water Test Kit Easy To Test And Read For Hardness, Lead,
Amazon.com
$17.99
17 in 1 Water Testing Kits For Drinking Water, 100 Strips + 4 Bacteria Tests, Tap And Well Water Test Kit Easy To Test And Read For Hardness, Lead,
Amazon.com
$5.99
Pawfly Hardness Test Kit - 100 Strips For Drinking, Tap, Well, Pool & Spa Water - Quick & Accurate Calcium & Magnesium Test (0-425 PPM)
Amazon.com
41
$5.99
Pawfly Hardness Test Kit - 100 Strips For Drinking, Tap, Well, Pool & Spa Water - Quick & Accurate Calcium & Magnesium Test (0-425 PPM)
Amazon.com
41
$59.00
Everpure EV433940 Water Test Kit Tests Water Hardness
IceMachinesPlus_2024
$59.00
Everpure EV433940 Water Test Kit Tests Water Hardness
IceMachinesPlus_2024
$114.00
Hach Total Hardness Test Kit Model HA-71A 145201
Core & Main
$114.00
Hach Total Hardness Test Kit Model HA-71A 145201
Core & Main
$12.66
$26.76
Allpoints 8016436 Test Kit(Water Hardness Dual | Kitchen Restock
Kitchen Restock
52% off
$12.66
$26.76
Allpoints 8016436 Test Kit(Water Hardness Dual | Kitchen Restock
Kitchen Restock
$8.12
$17.20
Allpoints 851259 Test Strips Water Hardness | Kitchen Restock
Kitchen Restock
52% off
$8.12
$17.20
Allpoints 851259 Test Strips Water Hardness | Kitchen Restock
Kitchen Restock
$29.99
Safe Home® 14-In-1 Drinking Water Test Kit - DIY Testing For Lead, Bacteria, Hardness, Copper And More - City Tap Or Well Water - 27 Mechanisms/Kit
Amazon.com
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$29.99
Safe Home® 14-In-1 Drinking Water Test Kit - DIY Testing For Lead, Bacteria, Hardness, Copper And More - City Tap Or Well Water - 27 Mechanisms/Kit
Amazon.com
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$16.99
22 in 1 Drinking Water Test Kit 130 Strips - Well, Tap, Home, Swimming Pool, Hot Tub Testing Strip For Flouride, Lead, Hardness, Chlorine, Iron,
Amazon.com
$16.99
22 in 1 Drinking Water Test Kit 130 Strips - Well, Tap, Home, Swimming Pool, Hot Tub Testing Strip For Flouride, Lead, Hardness, Chlorine, Iron,
Amazon.com
$11.99
Hydrion Water Hardness Test Kit
Level 7 Chemical
$11.99
Hydrion Water Hardness Test Kit
Level 7 Chemical
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Shop Hard-Water Soap Test

Sponsored
About our ads
$11.99
Varify Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test
Amazon.com
5K+
$11.99
Varify Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test
Amazon.com
5K+
$60.99
Hach Total Hardness Test Kit, Model 5-EP, Hardness Testing, Water Quality Test Kit, Accurate Hardness Measurement, Easy-To-Use Hardness Test Kit,
Amazon.com
Free shipping
$60.99
Hach Total Hardness Test Kit, Model 5-EP, Hardness Testing, Water Quality Test Kit, Accurate Hardness Measurement, Easy-To-Use Hardness Test Kit,
Amazon.com
Free shipping
$9.99
Water Hardness Test Kit - Quick And Accurate Water Hardness Test Strips - Hard Water Test Kit With Ebook - Ultimate Test Kit For Water Hardness -
Amazon.com
$9.99
Water Hardness Test Kit - Quick And Accurate Water Hardness Test Strips - Hard Water Test Kit With Ebook - Ultimate Test Kit For Water Hardness -
Amazon.com
$9.47
Weaqua Doublecheck Water Hardness Test Kit 200 Strips With Sample Cup - Hard Water Testing Strips (0-25 Gpg / 0-425 Ppm)
Amazon.com
665
$9.47
Weaqua Doublecheck Water Hardness Test Kit 200 Strips With Sample Cup - Hard Water Testing Strips (0-25 Gpg / 0-425 Ppm)
Amazon.com
665
$31.99
Total Water Hardness Test For Pool, Aquarium, And Drinking Water, And Improving Water Softener Efficiency, Hard Water Test Kit
Amazon.com
$31.99
Total Water Hardness Test For Pool, Aquarium, And Drinking Water, And Improving Water Softener Efficiency, Hard Water Test Kit
Amazon.com
$34.99
Watersafe The Original Water Testing Kit For Drinking Water, Well And Tap Water, Sensitive Lead In Water Test, Bacteria, Hardness, Ph, Nitrates,
Amazon.com
$34.99
Watersafe The Original Water Testing Kit For Drinking Water, Well And Tap Water, Sensitive Lead In Water Test, Bacteria, Hardness, Ph, Nitrates,
Amazon.com
$21.59
All-New 20 in 1 Drinking Water Testing Kit 120 Strips, Home Tap And Well Water Test Kit For Hardness, Lead, Iron, Copper, Chlorine, Fluoride
Amazon.com
715
$21.59
All-New 20 in 1 Drinking Water Testing Kit 120 Strips, Home Tap And Well Water Test Kit For Hardness, Lead, Iron, Copper, Chlorine, Fluoride
Amazon.com
715
$17.99
Clario - 24 in 1 Water Tester For Drinking Water - Water Hardness Test Kit For Aquarium, Well, Pool, And Hot Tub - 100 Complete Drinking Water Test
Amazon.com
124
$17.99
Clario - 24 in 1 Water Tester For Drinking Water - Water Hardness Test Kit For Aquarium, Well, Pool, And Hot Tub - 100 Complete Drinking Water Test
Amazon.com
124
$7.99
Lead Water Test Kit 2025 Upgraded 8 in 1 Home Drinking Water Testing Kits 5Pcs Independent Bag, House Tap And Well Water Hardness Tester, Lead Test
Amazon.com
$7.99
Lead Water Test Kit 2025 Upgraded 8 in 1 Home Drinking Water Testing Kits 5Pcs Independent Bag, House Tap And Well Water Hardness Tester, Lead Test
Amazon.com
$17.99
17 in 1 Water Testing Kits For Drinking Water, 100 Strips + 4 Bacteria Tests, Tap And Well Water Test Kit Easy To Test And Read For Hardness, Lead,
Amazon.com
$17.99
17 in 1 Water Testing Kits For Drinking Water, 100 Strips + 4 Bacteria Tests, Tap And Well Water Test Kit Easy To Test And Read For Hardness, Lead,
Amazon.com
$5.99
Pawfly Hardness Test Kit - 100 Strips For Drinking, Tap, Well, Pool & Spa Water - Quick & Accurate Calcium & Magnesium Test (0-425 PPM)
Amazon.com
41
$5.99
Pawfly Hardness Test Kit - 100 Strips For Drinking, Tap, Well, Pool & Spa Water - Quick & Accurate Calcium & Magnesium Test (0-425 PPM)
Amazon.com
41
$59.00
Everpure EV433940 Water Test Kit Tests Water Hardness
IceMachinesPlus_2024
$59.00
Everpure EV433940 Water Test Kit Tests Water Hardness
IceMachinesPlus_2024
$114.00
Hach Total Hardness Test Kit Model HA-71A 145201
Core & Main
$114.00
Hach Total Hardness Test Kit Model HA-71A 145201
Core & Main
$12.66
$26.76
Allpoints 8016436 Test Kit(Water Hardness Dual | Kitchen Restock
Kitchen Restock
52% off
$12.66
$26.76
Allpoints 8016436 Test Kit(Water Hardness Dual | Kitchen Restock
Kitchen Restock
$8.12
$17.20
Allpoints 851259 Test Strips Water Hardness | Kitchen Restock
Kitchen Restock
52% off
$8.12
$17.20
Allpoints 851259 Test Strips Water Hardness | Kitchen Restock
Kitchen Restock
$29.99
Safe Home® 14-In-1 Drinking Water Test Kit - DIY Testing For Lead, Bacteria, Hardness, Copper And More - City Tap Or Well Water - 27 Mechanisms/Kit
Amazon.com
721
$29.99
Safe Home® 14-In-1 Drinking Water Test Kit - DIY Testing For Lead, Bacteria, Hardness, Copper And More - City Tap Or Well Water - 27 Mechanisms/Kit
Amazon.com
721
$16.99
22 in 1 Drinking Water Test Kit 130 Strips - Well, Tap, Home, Swimming Pool, Hot Tub Testing Strip For Flouride, Lead, Hardness, Chlorine, Iron,
Amazon.com
$16.99
22 in 1 Drinking Water Test Kit 130 Strips - Well, Tap, Home, Swimming Pool, Hot Tub Testing Strip For Flouride, Lead, Hardness, Chlorine, Iron,
Amazon.com
$11.99
Hydrion Water Hardness Test Kit
Level 7 Chemical
$11.99
Hydrion Water Hardness Test Kit
Level 7 Chemical