Shop digital water hardness tester

Sponsored
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$69.00
Hardness Water Test Kit [Certified Laboratory]
Tap Score
$69.00
Hardness Water Test Kit [Certified Laboratory]
Tap Score
$9.99
Digital TDS Meter, Hofun 3 in 1 TDS, EC & Temperature Meter, Accurate & Reliable PPM Meter, Water Testing Kits For Drinking Water Quality, Tap, Well,
Amazon.com
$9.99
Digital TDS Meter, Hofun 3 in 1 TDS, EC & Temperature Meter, Accurate & Reliable PPM Meter, Water Testing Kits For Drinking Water Quality, Tap, Well,
Amazon.com
$12.99
Simpure TDS Meter Digital Water Tester, 4 in 1 TDS EC & Temperature Meter, Water Quality Hardness Testing Kits, High Accuracy PPM Meter For Drinking
Amazon.com
24
$12.99
Simpure TDS Meter Digital Water Tester, 4 in 1 TDS EC & Temperature Meter, Water Quality Hardness Testing Kits, High Accuracy PPM Meter For Drinking
Amazon.com
24
$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
817
$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
817
$5.89
Cxjesin 4 in 1 Digital Water Tester For Drinking Water - Accurate And Reliable TDS EC & Temperature(°C/°F) Meter - 0-9999 Ppm - For Drinking Water,
Amazon.com
92
$5.89
Cxjesin 4 in 1 Digital Water Tester For Drinking Water - Accurate And Reliable TDS EC & Temperature(°C/°F) Meter - 0-9999 Ppm - For Drinking Water,
Amazon.com
92
$8.99
Meter Digital Water Quality Tester - 4 in 1 TDS/EC/Temperature Meter, Digital Water Analyzer 0-9990 PPM, High Precision Portable Water Testing Pen For
Amazon.com
$8.99
Meter Digital Water Quality Tester - 4 in 1 TDS/EC/Temperature Meter, Digital Water Analyzer 0-9990 PPM, High Precision Portable Water Testing Pen For
Amazon.com
$3.99
4-In-1 Tds Meter Digital Water Tester - TDS/EC/Temperature( °C / °F )Meter | 0-9999 Ppm | For Drinking Water, Hydroponics, Aquariums, RO Systems &
Amazon.com
$3.99
4-In-1 Tds Meter Digital Water Tester - TDS/EC/Temperature( °C / °F )Meter | 0-9999 Ppm | For Drinking Water, Hydroponics, Aquariums, RO Systems &
Amazon.com
$591.00
Apera Instruments AI4731, Portable Water Hardness Meter Kit
Selectum
$591.00
Apera Instruments AI4731, Portable Water Hardness Meter Kit
Selectum
$35.97
Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purity PPM Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purit
Inspire Uplift
$35.97
Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purity PPM Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purit
Inspire Uplift
$6.99
4 in 1 TDS Meter Digital Water Tester,Water Tester For Drinking Water,PPM Meter With TDS/EC/Temp(°C,°F) Function, TDS Water Tester For Home,Aquarium,
Amazon.com
$6.99
4 in 1 TDS Meter Digital Water Tester,Water Tester For Drinking Water,PPM Meter With TDS/EC/Temp(°C,°F) Function, TDS Water Tester For Home,Aquarium,
Amazon.com
$59.99
Aero-Gro 5-In-1 Digital Water Testing Meter | Ph, TDS, EC, Salinity & Temperature Tester | Hydroponics, Aquarium, Pool & Drinking Water Quality
Amazon.com
Free shipping
$59.99
Aero-Gro 5-In-1 Digital Water Testing Meter | Ph, TDS, EC, Salinity & Temperature Tester | Hydroponics, Aquarium, Pool & Drinking Water Quality
Amazon.com
Free shipping
$14.99
TDS Digital Water Tester Water Test Pen Water Quality Analysis Meter Water Purity Check 0-9999 Ppm Measurement Hardness Tester
LightInTheBox
$14.99
TDS Digital Water Tester Water Test Pen Water Quality Analysis Meter Water Purity Check 0-9999 Ppm Measurement Hardness Tester
LightInTheBox
$21.99
Digital Water Quality Tester Pen: Measures Hardness, Conductivity, And Temperature
Digitalzakka
$21.99
Digital Water Quality Tester Pen: Measures Hardness, Conductivity, And Temperature
Digitalzakka
$44.97
Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter
Inspire Uplift
$44.97
Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter
Inspire Uplift
$24.99
$50.00
4 in 1 Tds Meter Digital Water Tester - Accurate And Reliable TDS EC & Temp(°C,°F) Meter - 0-9999Ppm - Professional Testing For Drinking Water, RO/DI
VXB.com
Free shipping
50% off
$24.99
$50.00
4 in 1 Tds Meter Digital Water Tester - Accurate And Reliable TDS EC & Temp(°C,°F) Meter - 0-9999Ppm - Professional Testing For Drinking Water, RO/DI
VXB.com
Free shipping
$6.89
Water Testing Kits For Drinking Water- 4 in 1 TDS Meter TDS EC & Temperature(°C,°F) Meter,Accurate & Reliable Digital Tap, Well, Swimming Pool,
Amazon.com
475
$6.89
Water Testing Kits For Drinking Water- 4 in 1 TDS Meter TDS EC & Temperature(°C,°F) Meter,Accurate & Reliable Digital Tap, Well, Swimming Pool,
Amazon.com
475
$129.99
7 in 1 Smart Water Quality Tester, Wireless Wifi Water Monitor Measures Ph/ORP/TDS/EC/Salinity/SG/TEMP, Water Quality Meter With App Connection
Amazon.com
3
Free shipping
$129.99
7 in 1 Smart Water Quality Tester, Wireless Wifi Water Monitor Measures Ph/ORP/TDS/EC/Salinity/SG/TEMP, Water Quality Meter With App Connection
Amazon.com
3
$65.99
DANOPLUS Smart Water Quality Tester, 24 Hrs Wireless App Monitoring Of Ph EC TDS Salinity SG Temperature, Mountable With Alarm Function For Aquariums
Amazon.com
Free shipping
$65.99
DANOPLUS Smart Water Quality Tester, 24 Hrs Wireless App Monitoring Of Ph EC TDS Salinity SG Temperature, Mountable With Alarm Function For Aquariums
Amazon.com
Free shipping
$43.99
Juviperpric Water Quality Tester TDS Mater, 6 in 1 Digital Water Tester,COD/TOC/TDS/UV275/EC/Temp Water Quality Tester For Drinking Water, Well, Tap,
Amazon.com
5
Free shipping
$43.99
Juviperpric Water Quality Tester TDS Mater, 6 in 1 Digital Water Tester,COD/TOC/TDS/UV275/EC/Temp Water Quality Tester For Drinking Water, Well, Tap,
Amazon.com
5
$34.99
Pentair R151276 Total Water Hardness Testing Parameter Kit
Vita Pool Supply
154
$34.99
Pentair R151276 Total Water Hardness Testing Parameter Kit
Vita Pool Supply
154
$77.30
Water Quality Meter, 6 in 1 Multifunctional Water Tester TDS EC SG Salt Temperature Tester With Connection Multi Parameter Water Monitor For Pool,
Amazon.com
Free shipping
$77.30
Water Quality Meter, 6 in 1 Multifunctional Water Tester TDS EC SG Salt Temperature Tester With Connection Multi Parameter Water Monitor For Pool,
Amazon.com
Free shipping
$14.99
HM Digital TDS-EZ Water Quality TDS Tester
Aquasure Corporation
$14.99
HM Digital TDS-EZ Water Quality TDS Tester
Aquasure Corporation
$35.55
Hach Total Hardness Water Test Kit Model 5-B 145300
Core & Main
1K+
$35.55
Hach Total Hardness Water Test Kit Model 5-B 145300
Core & Main
1K+
$24.99
Portable 7 in 1 Water Quality Tester Digital Pen For PH TDS EC Salinity ORP S.G Temperature Measurement With Backlight
Evalm
$24.99
Portable 7 in 1 Water Quality Tester Digital Pen For PH TDS EC Salinity ORP S.G Temperature Measurement With Backlight
Evalm
$324.97
Aquasense LS310 6 in 1 Digital Water Quality Tester For Drinking And Tap Water - Ls310 | Inspire Essentials
Inspire Uplift
Free shipping
30-day returns (most items)
$324.97
Aquasense LS310 6 in 1 Digital Water Quality Tester For Drinking And Tap Water - Ls310 | Inspire Essentials
Inspire Uplift
30-day returns
$15.67
HM Digital TDS-EZ, Water Quality Tester
Selectum
7K+
$15.67
HM Digital TDS-EZ, Water Quality Tester
Selectum
7K+
$17.99
4-In-1 Digital Water Tester For Accurate Drinking Water And Aquarium Measurements 01
Evalm
$17.99
4-In-1 Digital Water Tester For Accurate Drinking Water And Aquarium Measurements 01
Evalm
$22.99
Portable 7 in 1 Water Quality Tester Digital Pen For PH TDS EC Salinity ORP S.G Temperature Measurement Without Backlight
Evalm
$22.99
Portable 7 in 1 Water Quality Tester Digital Pen For PH TDS EC Salinity ORP S.G Temperature Measurement Without Backlight
Evalm
$25.99
Multifunctional 7 in 1 Portable Water Quality Tester For Ph TDS EC Salinity ORP S.G And Temperature Measurements 01
Evalm
$25.99
Multifunctional 7 in 1 Portable Water Quality Tester For Ph TDS EC Salinity ORP S.G And Temperature Measurements 01
Evalm
$4.99
Water Quality Portable Pen Checker - TDS Meter For Carnivorous Plants, Water Hardness, Purity, Healthiness, And Quality
Etsy
$4.99
Water Quality Portable Pen Checker - TDS Meter For Carnivorous Plants, Water Hardness, Purity, Healthiness, And Quality
Etsy
$24.99
Multifunctional 7 in 1 Portable Water Quality Tester For Ph TDS EC Salinity ORP S.G And Temperature Measurements 02
Evalm
$24.99
Multifunctional 7 in 1 Portable Water Quality Tester For Ph TDS EC Salinity ORP S.G And Temperature Measurements 02
Evalm
$15.99
Advanced Digital TDS Meter Water Quality Tester With Automatic Calibration, Temperature Button, And Leather Case
Home Depot
105
Free shipping
$15.99
Advanced Digital TDS Meter Water Quality Tester With Automatic Calibration, Temperature Button, And Leather Case
Home Depot
105
$6.19
Water Tester,Tds Meter,Zero Water Tester,0-9990 Ppm Digital Water Quality Tester Auto Calibration Easy To Use And Portable,,Professional Testing For D
Walmart
$6.19
Water Tester,Tds Meter,Zero Water Tester,0-9990 Ppm Digital Water Quality Tester Auto Calibration Easy To Use And Portable,,Professional Testing For D
Walmart
$158.49
5 in 1 Digital Water Quality Tester TDS EC PH Salinity Temperature Meter 5 in 1 Digital Water Quality Tester TDS EC PH Salinity Temperature Meter
Inspire Uplift
$158.49
5 in 1 Digital Water Quality Tester TDS EC PH Salinity Temperature Meter 5 in 1 Digital Water Quality Tester TDS EC PH Salinity Temperature Meter
Inspire Uplift
$2,364.78
Spi Portable Electronic Hardness Testers, Scale Type Leeb, Min Hardness 200 Hl, 200 Hl, Max Hardness 960 Hl, 960 Hl, Accuracy (Pt.) 0.5 (Leeb)%
Penn Tool Co
$2,364.78
Spi Portable Electronic Hardness Testers, Scale Type Leeb, Min Hardness 200 Hl, 200 Hl, Max Hardness 960 Hl, 960 Hl, Accuracy (Pt.) 0.5 (Leeb)%
Penn Tool Co
$19.99
$40.00
Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test Strips For Cal
VXB.com
Free shipping
50% off
$19.99
$40.00
Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test Strips For Cal
VXB.com
Free shipping
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    Shop digital water hardness tester

    Sponsored
    About our ads
    $69.00
    Hardness Water Test Kit [Certified Laboratory]
    Tap Score
    $69.00
    Hardness Water Test Kit [Certified Laboratory]
    Tap Score
    $9.99
    Digital TDS Meter, Hofun 3 in 1 TDS, EC & Temperature Meter, Accurate & Reliable PPM Meter, Water Testing Kits For Drinking Water Quality, Tap, Well,
    Amazon.com
    $9.99
    Digital TDS Meter, Hofun 3 in 1 TDS, EC & Temperature Meter, Accurate & Reliable PPM Meter, Water Testing Kits For Drinking Water Quality, Tap, Well,
    Amazon.com
    $12.99
    Simpure TDS Meter Digital Water Tester, 4 in 1 TDS EC & Temperature Meter, Water Quality Hardness Testing Kits, High Accuracy PPM Meter For Drinking
    Amazon.com
    24
    $12.99
    Simpure TDS Meter Digital Water Tester, 4 in 1 TDS EC & Temperature Meter, Water Quality Hardness Testing Kits, High Accuracy PPM Meter For Drinking
    Amazon.com
    24
    $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
    817
    $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
    817
    $5.89
    Cxjesin 4 in 1 Digital Water Tester For Drinking Water - Accurate And Reliable TDS EC & Temperature(°C/°F) Meter - 0-9999 Ppm - For Drinking Water,
    Amazon.com
    92
    $5.89
    Cxjesin 4 in 1 Digital Water Tester For Drinking Water - Accurate And Reliable TDS EC & Temperature(°C/°F) Meter - 0-9999 Ppm - For Drinking Water,
    Amazon.com
    92
    $8.99
    Meter Digital Water Quality Tester - 4 in 1 TDS/EC/Temperature Meter, Digital Water Analyzer 0-9990 PPM, High Precision Portable Water Testing Pen For
    Amazon.com
    $8.99
    Meter Digital Water Quality Tester - 4 in 1 TDS/EC/Temperature Meter, Digital Water Analyzer 0-9990 PPM, High Precision Portable Water Testing Pen For
    Amazon.com
    $3.99
    4-In-1 Tds Meter Digital Water Tester - TDS/EC/Temperature( °C / °F )Meter | 0-9999 Ppm | For Drinking Water, Hydroponics, Aquariums, RO Systems &
    Amazon.com
    $3.99
    4-In-1 Tds Meter Digital Water Tester - TDS/EC/Temperature( °C / °F )Meter | 0-9999 Ppm | For Drinking Water, Hydroponics, Aquariums, RO Systems &
    Amazon.com
    $591.00
    Apera Instruments AI4731, Portable Water Hardness Meter Kit
    Selectum
    $591.00
    Apera Instruments AI4731, Portable Water Hardness Meter Kit
    Selectum
    $35.97
    Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purity PPM Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purit
    Inspire Uplift
    $35.97
    Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purity PPM Handheld TDS Water Quality Meter Digital LCD Tester For Hardness & Purit
    Inspire Uplift
    $6.99
    4 in 1 TDS Meter Digital Water Tester,Water Tester For Drinking Water,PPM Meter With TDS/EC/Temp(°C,°F) Function, TDS Water Tester For Home,Aquarium,
    Amazon.com
    $6.99
    4 in 1 TDS Meter Digital Water Tester,Water Tester For Drinking Water,PPM Meter With TDS/EC/Temp(°C,°F) Function, TDS Water Tester For Home,Aquarium,
    Amazon.com
    $59.99
    Aero-Gro 5-In-1 Digital Water Testing Meter | Ph, TDS, EC, Salinity & Temperature Tester | Hydroponics, Aquarium, Pool & Drinking Water Quality
    Amazon.com
    Free shipping
    $59.99
    Aero-Gro 5-In-1 Digital Water Testing Meter | Ph, TDS, EC, Salinity & Temperature Tester | Hydroponics, Aquarium, Pool & Drinking Water Quality
    Amazon.com
    Free shipping
    $14.99
    TDS Digital Water Tester Water Test Pen Water Quality Analysis Meter Water Purity Check 0-9999 Ppm Measurement Hardness Tester
    LightInTheBox
    $14.99
    TDS Digital Water Tester Water Test Pen Water Quality Analysis Meter Water Purity Check 0-9999 Ppm Measurement Hardness Tester
    LightInTheBox
    $21.99
    Digital Water Quality Tester Pen: Measures Hardness, Conductivity, And Temperature
    Digitalzakka
    $21.99
    Digital Water Quality Tester Pen: Measures Hardness, Conductivity, And Temperature
    Digitalzakka
    $44.97
    Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter
    Inspire Uplift
    $44.97
    Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter Digital Water Quality Tester Pen PH TDS EC ORP Temp SG Salinity Meter
    Inspire Uplift
    $24.99
    $50.00
    4 in 1 Tds Meter Digital Water Tester - Accurate And Reliable TDS EC & Temp(°C,°F) Meter - 0-9999Ppm - Professional Testing For Drinking Water, RO/DI
    VXB.com
    Free shipping
    50% off
    $24.99
    $50.00
    4 in 1 Tds Meter Digital Water Tester - Accurate And Reliable TDS EC & Temp(°C,°F) Meter - 0-9999Ppm - Professional Testing For Drinking Water, RO/DI
    VXB.com
    Free shipping
    $6.89
    Water Testing Kits For Drinking Water- 4 in 1 TDS Meter TDS EC & Temperature(°C,°F) Meter,Accurate & Reliable Digital Tap, Well, Swimming Pool,
    Amazon.com
    475
    $6.89
    Water Testing Kits For Drinking Water- 4 in 1 TDS Meter TDS EC & Temperature(°C,°F) Meter,Accurate & Reliable Digital Tap, Well, Swimming Pool,
    Amazon.com
    475
    $129.99
    7 in 1 Smart Water Quality Tester, Wireless Wifi Water Monitor Measures Ph/ORP/TDS/EC/Salinity/SG/TEMP, Water Quality Meter With App Connection
    Amazon.com
    3
    Free shipping
    $129.99
    7 in 1 Smart Water Quality Tester, Wireless Wifi Water Monitor Measures Ph/ORP/TDS/EC/Salinity/SG/TEMP, Water Quality Meter With App Connection
    Amazon.com
    3
    $65.99
    DANOPLUS Smart Water Quality Tester, 24 Hrs Wireless App Monitoring Of Ph EC TDS Salinity SG Temperature, Mountable With Alarm Function For Aquariums
    Amazon.com
    Free shipping
    $65.99
    DANOPLUS Smart Water Quality Tester, 24 Hrs Wireless App Monitoring Of Ph EC TDS Salinity SG Temperature, Mountable With Alarm Function For Aquariums
    Amazon.com
    Free shipping