Conductivity & TDS Meters

Conductivity and TDS meters are essential tools for measuring the ionic content in various solutions. These devices are important in applications ranging from water testing to quality control in manufacturing processes. Conductivity meters specifically assess the electrical conductance in a solution, providing insights into its overall ionic concentration. TDS meters, on the other hand, estimate the total dissolved solids by measuring conductivity and converting this value into TDS units.

The main features of these meters include advanced sensors for accurate readings, user-friendly interfaces, and robust designs for longevity. Most models carry automatic temperature compensation features, enhancing measurement accuracy across different environments. Conductivity calibration standards are readily available, ensuring ongoing precision and reliability. TDS products often feature multi-parameter testing capabilities, offering a comprehensive water quality analysis. Integrating these features in conductivity and TDS meters delivers precise, reliable data crucial for numerous Scientific and industrial applications.

See also our conductivity solutions for related products.

Conductivity & TDS Meters

Products (65)

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  • Thomas Traceable Conductivity Calibration Standards

    labForce® (powered by Thomas Scientific)

    Sixteen ounces of liquid for frequent calibration needs Highest accuracy available Units labeled (micromhos/millisiemens, ohms, parts per million/TDS) Includes step-by-step calibration instructions and temperature chart 100% compatible with all makes of equipment Calibration standards are traceable...

  • 1,414 uS/cm Conductivity Solution 500mL

    The 1413 µS/cm calibration solution is best suited for general use. This solution is also available in combined kits with HANNA pH 7 buffer for easy calibration of multiparameter instruments.

  • Thomas One-Shot Traceable Conductivity Standards

    labForce® (powered by Thomas Scientific)

    Traceable to NIST standards Accuracy: ±0.25% 100% compatible with all makes of equipment For use in the lab and the field Single-use standards eliminate concerns about external container contamination. Each container is labeled for calibrating conductivity (micromhos), resistivity (megohms)...

  • Star™ A322 Conductivity Portable Meters

    The Thermo Scientific Orion Star A322 Conductivity Portable Meter is the top choice for advanced measurements on location. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display shows conductivity/TDS/ salinity resistivity and temperature...

  • Conductivity Calibration Solutions

    Calibrate your equipment for maximum accuracy Reagent-grade secondary standards Traceable to NIST standards 1,000, 10,000, 50,000 and 100,000 µmhos/cm Each bottle includes detailed instructions and a table of corrections at temperatures between 20 and 30°C. Packaged in glass quarts. The...

  • Salinity/Temperature Meter

    Waterproof meter with high-accuracy multi-ranging sensor Measure Salinity in aquaculture, environmental studies, ground water, Koi ponds, irrigation, drinking water, and other applications Autoranging with 2 ranges of measurement Built-in NaCl Conductivity to TDS conversion factor Large 3-1/2 digit...

  • Multiparameter Meter Accessories

    The Myron L® hard carry case has a high density polyethylene plastic shell with a foam-lined interior that conforms to specific instruments and accessories to provide maximum shock absorption. Actual configurations may differ from what is shown. (Model PKUU).Soft and hard carry cases for all digital...

  • Conductivity/pH Ultrameter

    pH/ORP Sensor protective cap Memory for 20 readings Display prompts for simple pH calibration Temperature compensation This meter has a reading accuracy of ±1%, which has been achieved through advanced four-electrode conductivity cell technology, a unique pH/ORP sensor and powerful...

  • Ultrameter Conductivity Meter

    Autoranging Adjustable temperature control Powerful microprocessor-based surface-mount circuitry Memory for 20 readings Data back up system Low battery indicator Fast and accurate, the Ultrameter delivers performance of ±1% of reading. Factory calibrated with NIST traceable solutions, the...

  • Conductivity Meter

    labForce® (powered by Thomas Scientific)

    Traceable® Pens for Conductivity, Dissolved Solids, and Salinity provides for conductivity, conductivity/total dissolved solids and salinity. Meters fulfill requirements for CAP, ASTM, NCCLS, CLSI, ACS, CLIA, AOAC, EPA, APHA, AWWA, WEF, USGS, USP, ISO and Federal/State regulations. Waterproof...

  • TDS Conductivity Meter by labForce®

    labForce® (powered by Thomas Scientific)

    Traceable® Pens for Conductivity, Dissolved Solids, and Salinity provides for conductivity, conductivity/total dissolved solids and salinity. Meters fulfill requirements for CAP, ASTM, NCCLS, CLSI, ACS, CLIA, AOAC, EPA, APHA, AWWA, WEF, USGS, USP, ISO and Federal/State regulations. Waterproof...

  • Redi-Stor™ Conductivity Probe Storage Solution, 16 oz Bottle

    Redi-Stor™ is the ideal solution for storing conductivity probes. It preserves probe’s cleanliness, eliminates growths found when storing in water only, and maintains the probe for immediate use with no conditioning.

  • Russell Portable Conductivity/Temperature Meter

    1, 2 or 3 point calibration (1 per range) Auto-ranging capability The Russell RL060C is a rugged conductivity meter you can use in the plant or in the field.  Auto-ranging capabilities provide ±1 full scale accuracy with fast, repeatable results. Simple four button operation makes...

  • EcoSense EC300A Conductivity/Temperature Meters

    The EcoSense® line of compact, handheld instruments provides the most accurate data in the most affordable format. The instruments feature an easy-to-use interface, one-hand operation, IP67 waterproof case, and low cost of ownership over the life of the product. The EC300A simultaneously...

  • ProfiLine Single-parameter Portable Conductivity Meter Series

    The portable WTW ProfiLine meter series is available in three (3) series versions, the 3110/3205-Basic series, 3210-Professional series and 3310-Advanced series, each with a distinct level of sophistication for the independent measurement of pH, conductivity, or dissolved oxygen. All versions have a...

  • CON 700 Benchtop Meter

    An affordable way to take consistent, accurate conductivity measurements in your laboratory Compact size frees up bench space Large brightly lit display allows for easy reading of measured values Easily toggle between conductivity and TDS at the touch of a button! CON 700 meter reads 0 to 199.9 mS...

  • VERSA STAR pH/Conductivity Multiparameter Benchtop Meter

    This versatile meter has a large, color graphic LCD display. The informative display shows readings, connections, time, date, sample ID, user ID and calibration information. Select from five modules to customize the four channels as you need it – it's versatile for you to configure how you need it...

  • Pocket Conductivity / TDS Meter

    This multi-functional pen type water quality meter measures conductivity and total dissolved solids to determine water quality. The unit has auto calibration and automatic shut off if idle for 2 minutes. This compact unit weighs just 27 grams, is 6” in length and easily fits into a shirt...

  • MultiLab Multi-Parameter Benchtop Meters

    The YSI MultiLab line includes the 4010-1W (single channel), 4010-2W (dual channel) and 4010-3W (three channel) instruments providing easy to use and calibrate menu-driven operation ideal for the laboratory. All MultiLab instruments can accurately measure pH, ORP, conductivity, and DO/BOD. ISEs can...

  • Conductivity/Temperature Field Probe & Cable

    The YSI conductivity/temperature field probe & 4 Meter cable are compatible for use with EcoSense EC300, EC300A conductivity meter models. It is made of sturdy material which ensures durability and long lasting usage.

  • Orion Star A222 Conductivity Portable Meter

    Get the readings that you need where you need them with the Thermo Scientific Orion Star A222 Conductivity Portable Meter. The large, backlit graphic LCD display shows conductivity/ TDS/salinity/resistivity and temperature along with electrode status, time, date and calibration points. Anyone can...

  • 2-Electrode Conductivity Cells

    Thermo Scientific Orion

    The two electrode cells are able to measure low, standard and high conductivity samples depending on the cell constant. Cells with a 0.1cm -1 cell constant are ideal for low ionic strength solutions, deionized water, and ultra pure water. Glass/platinum cells are the best for chemically reactive...

  • SevenDirect SD20 pH Meter

    The pH Meter SevenDirect SD20 provides accurate pH measurements for almost any sample across a wide range of applications. The EasyPlace electrode arm and protective cover are included with the instrument. The benchtop meter's ease of use, data handling options and robustness will delight...

  • Conductivity/TDS/Temperature Meter

    Waterproof meter with high-accuracy multi-ranging sensor Units of measure include µS/cm, mS/cm, ppm, ppt Adjustable Conductivity to TDS ratio factor from 0.4 to 1.0 — conveniently calculates the TDS value Large 3-1/2 digit (2000 count) LCD display Data Hold and low battery indication...

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