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$74.95
COM-100 HM Digital EC TDS & Temperature Waterproof Meter
US Water Systems
$74.95
COM-100 HM Digital EC TDS & Temperature Waterproof Meter
US Water Systems
$15.00
TDS Meter - Third Wave Water
Third Wave Water
$15.00
TDS Meter - Third Wave Water
Third Wave Water
$29.95
HM Digital QC-1 Quick Check TDS Monitor
US Water Systems
$29.95
HM Digital QC-1 Quick Check TDS Monitor
US Water Systems
$29.95
$54.51
Advanced TDS Meter For Reverse Osmosis Systems
US Water Systems
45% off
$29.95
$54.51
Advanced TDS Meter For Reverse Osmosis Systems
US Water Systems
$134.00
Extech EC400 Exstik Waterproof Conductivity, TDS, Salinity, And Temperature Meter
Amazon.com
153
Free shipping
$134.00
Extech EC400 Exstik Waterproof Conductivity, TDS, Salinity, And Temperature Meter
Amazon.com
$26.24
HM Digital TDS-3 TDS Meter | Tests 0-9990 Ppm Total Dissolved Solids In Water
WaterAnywhere
11
$26.24
HM Digital TDS-3 TDS Meter | Tests 0-9990 Ppm Total Dissolved Solids In Water
WaterAnywhere
$24.14
HM Digital Pocket TDS Meter Measures 0-9990 Ppm Total Dissolved Solids (TDS)
WaterAnywhere
1K+
$24.14
HM Digital Pocket TDS Meter Measures 0-9990 Ppm Total Dissolved Solids (TDS)
WaterAnywhere
$40.94
DM-1 in & Out Digital Display TDS Tester | Inline TDS Meter | HM Digital
WaterAnywhere
2K+
$40.94
DM-1 in & Out Digital Display TDS Tester | Inline TDS Meter | HM Digital
WaterAnywhere
$483.65
$569.00
Myron L 532T1 0-50, 500, 5000 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
15% off
$483.65
$569.00
Myron L 532T1 0-50, 500, 5000 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
$483.65
$569.00
Myron L 532T2 0-25, 250, 2500 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
15% off
$483.65
$569.00
Myron L 532T2 0-25, 250, 2500 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
$19.94
HM Digital TDS-3 Handheld TDS/EC/Temp Meter
Hydrobuilder
11
$19.94
HM Digital TDS-3 Handheld TDS/EC/Temp Meter
Hydrobuilder
$85.00
Seawater Pro TDS Monitor Handheld
Seawater Pro, LLC
$85.00
Seawater Pro TDS Monitor Handheld
Seawater Pro, LLC
$901.91
Myron L 4PII Conductivity, Resistivity, TDS, Temperature Meter
Amazon.com
5
Free shipping
$901.91
Myron L 4PII Conductivity, Resistivity, TDS, Temperature Meter
Amazon.com
$195.00
Milwaukee MW802 - PRO 3-In-1 Ph/EC/TDS Combo Meter With ATC
TEquipment
54
$195.00
Milwaukee MW802 - PRO 3-In-1 Ph/EC/TDS Combo Meter With ATC
TEquipment
$27.45
Pocket TDS Meter With Case
PremierH2O
$27.45
Pocket TDS Meter With Case
PremierH2O
$97.99
EC150 - Conductivity/TDS/Temperature Meter
Amazon.com
138
Free shipping
$97.99
EC150 - Conductivity/TDS/Temperature Meter
Amazon.com
$58.71
Everpure EV650020 TDS Meter Pocket Size Check Water
IceMachinesPlus_2024
$58.71
Everpure EV650020 TDS Meter Pocket Size Check Water
IceMachinesPlus_2024
$59.95
HM Digital COM-100 Pro Series EC/TDS/Temp Meter
Hydrobuilder
169
$59.95
HM Digital COM-100 Pro Series EC/TDS/Temp Meter
Hydrobuilder
$469.25
Oakton TDS 6+ Handheld Total Dissolved Solids Meter With Probe, -10 To 110°C Temperature Range And 0 To 10.00, 10 To 100.0, 100 To 1000 Ppm 1.00 To 10.00, 10.0 To 100.0, Up To 200.0 Ppt TDS Range - WD-35604-20
JJS Tech
$469.25
Oakton TDS 6+ Handheld Total Dissolved Solids Meter With Probe, -10 To 110°C Temperature Range And 0 To 10.00, 10 To 100.0, 100 To 1000 Ppm 1.00 To 10.00, 10.0 To 100.0, Up To 200.0 Ppt TDS Range - WD-35604-20
JJS Tech
$683.50
Environmental Express Oakton TDS 6+ Handheld TDS Meter With Probe | Cole-Parmer
Cole-Parmer
$683.50
Environmental Express Oakton TDS 6+ Handheld TDS Meter With Probe | Cole-Parmer
Cole-Parmer
$39.36
Tucker USA Handheld TDS Meter
Signature Solar
$39.36
Tucker USA Handheld TDS Meter
Signature Solar
$159.95
HM Digital Ph/TDS/EC/Temperature Digital Water Tester Com-300
Cannon Water Technology
$159.95
HM Digital Ph/TDS/EC/Temperature Digital Water Tester Com-300
Cannon Water Technology
$233.14
$249.00
Extech EC210 Compact Conductivity TDS Meter
Test Equipment Depot
$233.14
$249.00
Extech EC210 Compact Conductivity TDS Meter
Test Equipment Depot
$187.00
Hach Pocket Pro High Range TDS Tester 9531300
Core & Main
$187.00
Hach Pocket Pro High Range TDS Tester 9531300
Core & Main
$14.51
HM Digital TDS-3, Handheld TDS Meter With Carrying Case
Selectum
11
$14.51
HM Digital TDS-3, Handheld TDS Meter With Carrying Case
Selectum
$543.95
$609.95
Multiparameter Ph/COND/SALT/TDS/DO Water Quality Tester Water Proof, With D.O. Probe
MSE Supplies
10% off
$543.95
$609.95
Multiparameter Ph/COND/SALT/TDS/DO Water Quality Tester Water Proof, With D.O. Probe
MSE Supplies
$966.26
Lamotte Co - Tds/C Meter Tds 6 Plus Handheld W/ Carrying Case -
Pool Spa Supplies
$966.26
Lamotte Co - Tds/C Meter Tds 6 Plus Handheld W/ Carrying Case -
Pool Spa Supplies
$39.95
HM Digital COM-80 EC/TDS Hydrotester
Cannon Water Technology
$39.95
HM Digital COM-80 EC/TDS Hydrotester
Cannon Water Technology
$14.89
2-Button Digital TDS Meter With Backlit LCD
Home Depot
Free shipping
$14.89
2-Button Digital TDS Meter With Backlit LCD
Home Depot
$1,251.00
Hach HQ2100 Portable Multi-Meter Ph/TDS/DO/ORP With Out Electrodes LEV015.53.2100A
Core & Main
$1,251.00
Hach HQ2100 Portable Multi-Meter Ph/TDS/DO/ORP With Out Electrodes LEV015.53.2100A
Core & Main
$160.85
Extech Pocket Multiparameter Meter: Conductivity/Salinity/Temp/Total Dissolved Solids Model: EC400
Grainger
385
$160.85
Extech Pocket Multiparameter Meter: Conductivity/Salinity/Temp/Total Dissolved Solids Model: EC400
Grainger
$78.76
Pro HM Digital EC/TDS Testing And Monitoring Meter, COM-100
Sonnys' Direct
$78.76
Pro HM Digital EC/TDS Testing And Monitoring Meter, COM-100
Sonnys' Direct
$95.00
Milwaukee EC40 - EC/TDS Nutrient Meter
TEquipment
$95.00
Milwaukee EC40 - EC/TDS Nutrient Meter
TEquipment
$665.76
OAKTON TDS 6+ Meter And Probe
Globaltestsupply.com
$665.76
OAKTON TDS 6+ Meter And Probe
Globaltestsupply.com
$316.00
Hach Pocket Pro+ Multi 1 Tester For Cond/TDS/Salinity With Replaceable Sensor 9532700
Core & Main
$316.00
Hach Pocket Pro+ Multi 1 Tester For Cond/TDS/Salinity With Replaceable Sensor 9532700
Core & Main
$27.99
$33.35
Pocket Conductivity / TDS Meter
Sper Direct
16% off
$27.99
$33.35
Pocket Conductivity / TDS Meter
Sper Direct
How to use a TDS meter to test water purity - total dissolved solids
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Shop tds meter testing

Sponsored
About our ads
$74.95
COM-100 HM Digital EC TDS & Temperature Waterproof Meter
US Water Systems
$74.95
COM-100 HM Digital EC TDS & Temperature Waterproof Meter
US Water Systems
$15.00
TDS Meter - Third Wave Water
Third Wave Water
$15.00
TDS Meter - Third Wave Water
Third Wave Water
$29.95
HM Digital QC-1 Quick Check TDS Monitor
US Water Systems
$29.95
HM Digital QC-1 Quick Check TDS Monitor
US Water Systems
$29.95
$54.51
Advanced TDS Meter For Reverse Osmosis Systems
US Water Systems
45% off
$29.95
$54.51
Advanced TDS Meter For Reverse Osmosis Systems
US Water Systems
$134.00
Extech EC400 Exstik Waterproof Conductivity, TDS, Salinity, And Temperature Meter
Amazon.com
153
Free shipping
$134.00
Extech EC400 Exstik Waterproof Conductivity, TDS, Salinity, And Temperature Meter
Amazon.com
$26.24
HM Digital TDS-3 TDS Meter | Tests 0-9990 Ppm Total Dissolved Solids In Water
WaterAnywhere
11
$26.24
HM Digital TDS-3 TDS Meter | Tests 0-9990 Ppm Total Dissolved Solids In Water
WaterAnywhere
$24.14
HM Digital Pocket TDS Meter Measures 0-9990 Ppm Total Dissolved Solids (TDS)
WaterAnywhere
1K+
$24.14
HM Digital Pocket TDS Meter Measures 0-9990 Ppm Total Dissolved Solids (TDS)
WaterAnywhere
$40.94
DM-1 in & Out Digital Display TDS Tester | Inline TDS Meter | HM Digital
WaterAnywhere
2K+
$40.94
DM-1 in & Out Digital Display TDS Tester | Inline TDS Meter | HM Digital
WaterAnywhere
$483.65
$569.00
Myron L 532T1 0-50, 500, 5000 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
15% off
$483.65
$569.00
Myron L 532T1 0-50, 500, 5000 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
$483.65
$569.00
Myron L 532T2 0-25, 250, 2500 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
15% off
$483.65
$569.00
Myron L 532T2 0-25, 250, 2500 Ppm Multi-Range TDS Meter | Serv-A-Pure
Serv-A-Pure
$19.94
HM Digital TDS-3 Handheld TDS/EC/Temp Meter
Hydrobuilder
11
$19.94
HM Digital TDS-3 Handheld TDS/EC/Temp Meter
Hydrobuilder
$85.00
Seawater Pro TDS Monitor Handheld
Seawater Pro, LLC
$85.00
Seawater Pro TDS Monitor Handheld
Seawater Pro, LLC
$901.91
Myron L 4PII Conductivity, Resistivity, TDS, Temperature Meter
Amazon.com
5
Free shipping
$901.91
Myron L 4PII Conductivity, Resistivity, TDS, Temperature Meter
Amazon.com
$195.00
Milwaukee MW802 - PRO 3-In-1 Ph/EC/TDS Combo Meter With ATC
TEquipment
54
$195.00
Milwaukee MW802 - PRO 3-In-1 Ph/EC/TDS Combo Meter With ATC
TEquipment
$27.45
Pocket TDS Meter With Case
PremierH2O
$27.45
Pocket TDS Meter With Case
PremierH2O
$97.99
EC150 - Conductivity/TDS/Temperature Meter
Amazon.com
138
Free shipping
$97.99
EC150 - Conductivity/TDS/Temperature Meter
Amazon.com
$58.71
Everpure EV650020 TDS Meter Pocket Size Check Water
IceMachinesPlus_2024
$58.71
Everpure EV650020 TDS Meter Pocket Size Check Water
IceMachinesPlus_2024
$59.95
HM Digital COM-100 Pro Series EC/TDS/Temp Meter
Hydrobuilder
169
$59.95
HM Digital COM-100 Pro Series EC/TDS/Temp Meter
Hydrobuilder