TDS Meters
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Conductivity Meter, Mini - General Tools
This lightweight Mini Conductivity Meter features a digital display and automatic temperature compensation. Features: Digital display Automatic temperature compensation Pocket sized ... MORE INFO
Your Price: $56.95
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Conductivity Meter w/ Excel-Formatted Data Logging SD Card - General Tools
This conductivity meter accurately measures any solution’s conductivity, total dissolved solids (TDS),salt content and temperature. Features: Includes 3-parameter probe Conductivity... MORE INFO
Your Price: $409.00
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Digital Conductivity Meter - General Tools
This Digital Conductivity Meter from General Tools is waterproof to IP-57 standard and floats on water, and utilizes a replaceable electrode to measure conductivity, TDS, salinity and temperature. The... MORE INFO
Your Price: $103.95
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ExStik Conductivity/TDS/Salinity Kit
The ExStik Conductivity/TDS/Salinity Kit features all calibration standards and comes complete with sample plastic cups and a carrying case for extra convenience. The waterproof meter features one... MORE INFO
Your Price: $129.99
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Extech pH / Conductivity / TDS / ORP / Salinity Meter, Oyster Series
This Extech ph / conductivity / TDS / ORP / salinity meter features a mini pH electrode and Polymer conductivity cell. It has a large LCD built into adjustable flip-up cover displays measurement... MORE INFO
Your Price: $459.99
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Hanna Combo Waterproof pH /EC/TDS/°C Tester

(1 Review) The Hanna Combo Waterproof pH /EC/TDS/°C Tester is designed for high accuracy pH, EC/TDS and temperature measurements. This convenient combination meter makes it easy to take measurements of different... MORE INFO
Your Price: $212.95
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Hanna DiST®5 Waterproof EC/TDS/°C/°F Tester
Measuring Conductivity and Total Dissolved Solids has never been easier, thanks to the Hanna DiST® (Dissolved Solids Tester) Waterproof Tester. This easy to use, affordable instrument is the standard... MORE INFO
Your Price: $127.95
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Hanna EC/TDS 10 Inch Probe for HI 981409
Add more functionality to the Tester for Fertigation Solutions with this Hanna EC/TDS 10" Probe... MORE INFO
Your Price: $52.95
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Hanna EC/TDS Tester for Fertigation Solutions
This Hanna EC/TDS Tester is used with fertigation solutions. The meter has been specifically designed to address the needs of operators in hydroponics, greenhouses and nurseries. Designed with... MORE INFO
Your Price: $88.95
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Hanna Multiparameter GPS Enabled Water Quality Meter w/ Fast Tracker™ Tag Identification System (TIS)
Available Hanna Multiparameter Water Quality Meter Versions: w/ 4m Cable | w/ 10m Cable
This Hanna multiparameter GPS enabled water quality meter can be used for automatic logging of up to 60,000 samples with 13 measurements each, and comes equipped with a probe, calibration solution,...
Starting At: $2,708.95
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Hanna Multiparameter Water Quality Meter

(1 Review) Available Hanna Multiparameter Water Quality Meter Versions: w/ 4m Cable | w/ 10m Cable
This Hanna multiparameter water quality meter features quick calibration, built-in barometer, measurement check, automatic recognition of pH/ORP probe and USB connectivity. Use it for on-demand or...
Starting At: $2,187.95
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Hanna pH / Conductivity / TDS Water Quality Meter - Water Resistant
This convenient instrument is ideal for use in coolers and boilers, printing and agriculture, and eliminates the need for extra equipment by measuring Hanna pH, conductivity, and TDS all at the same... MORE INFO
Your Price: $204.95
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Hanna Pocket TDS Tester

(1 Review) Available Hanna Pocket TDS Tester Versions: DiST® 1 - Range up to 1999 ppm (mg/L) | DiST® 2 - Range up to 10000 ppm (mg/L)
This Hanna pocket TDS tester features a large LCD and is designed to provide a comfortable grip for the user. Take accurate readings of TDS quickly and with better repeatability due to graphite sensors...
Starting At: $56.95
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Hanna Portable EC / TDS Tester w/ Sample Cell

(1 Review) Available Hanna Portable EC / TDS Tester Versions: Low Range - DiST 7 | High Range - DiST 8
This Hanna portable low range EC/TDS tester is a microprocessor-based meter that meets the demands of professionals who require a reliable, accurate meter for water treatment, boilers and cooling towers,...
Starting At: $80.95
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Hanna Waterproof Combo pH / EC / TDS / Temperature Tester - High Range
This Hanna waterproof combo pH / EC / TDS / temperature tester offers high accuracy pH, EC/TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements.... MORE INFO
Your Price: $212.95
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Hanna Waterproof EC / TDS / NaCl / Temperature Meter
This Hanna waterproof EC / TDS / NaCl / temperature meter combines four important parameters you need for measuring conductivity. Now you can sample Electro-Conductivity (EC), Total Dissolved Solids... MORE INFO
Your Price: $680.95
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Hanna Waterproof EC / TDS / Temperature Tester
Available Hanna Waterproof EC / TDS / Temp. Tester Versions: DiST® 5 - Low Range | DiST® 6 - High Range
This Hanna waterproof EC / TDS / Temperature tester includes features such as a replaceable graphite electrode, adjustable TDS ratio, temperature in °C or °F, automatic temperature compensation...
Starting At: $127.95
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Hanna Waterproof Multiparameter Water Quality Meter
Available Hanna Waterproof Multiparameter Versions: Low Range | High Range
The Hanna Waterproof Multiparameter Water Quality Meter is an easy-to-use instrument that tests pH, conductivity (EC), Total Dissolved Solids (TDS) and temperature with a single probe. The waterproof...
Starting At: $509.95
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Multi Parameter Water Quality Meter, Waterproof - Self Calibrating - General Tools
Take this tool into the field and you’ll be ready to test pH, conductivity, total dissolved solids, salinity and temperature as needed. The digital display is easy to read, and the lightweight, waterproof... MORE INFO
Your Price: $192.95
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TDS Meter, Mini - General Tools
This lightweight, pocket-sized Mini TDS Meter can be carried anywhere in a pocket and is ideally suited for quick and accurate water quality testing. Use this reliable instrument for monitoring drinking... MORE INFO
Your Price: $56.95
TDS Meters
TDS, or Total Dissolved Solids, is the percentage of mineral content in water. TDS is commonly estimated from the electrical conductivity of the water. Pure water is a poor conductor of electricity. Impurities dissolved in the water cause an increase in the ability of the water to conduct electricity. Shop our selection of TDS meters for the most accurate TDS measurements.














