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Portable Turbidity meters

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Handheld Dissolved Oxygen IP67 Dissolved Oxygen Meters

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Industrial Dissolved Oxygen 

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Total Dissolved Solids (TDS)

Portable TDS Testers

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Portable Salinity Testers

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Multi-parameter Bench Meters


Please click above to view this range


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Electrochemical Sensors

pH, Reference, Conductivity, Redox, Dissolved Oxygen, Ion Selective Electrodes, Calibration Solutions, Hollow Cathode Lamps and

Deuterium Lamps

Total Dissolved Solids (TDS) : Portable TDS Testers for pure water, distilled water, natural water, reverse osmosis system applications

Choose from our range of TDScan Total Dissolved Solids (TDS) Testers. This range of unique IP67 pocket-sized waterproof portable TDS meters have many advanced features such as waterproof, dustproof housing IP67 rated - maintains the integrity of your tester even in harsh field conditions, Automatic Temperature Compensation (ATC) - ensures optimum accuracy under fluctuating temperatures, Microprocessor based functions for fast and stable readings. These handy accurate testers can be used for a wide range of conductivity applications ranging from tap water quality and low TDS value applications through to saline and chemical levels checks in pools and spas

Applications for the TDScan range of meters include :

General : 

TDScan Pure+ is used in pure water, distilled water, natural water, reverse osmosis system applications. TDScan Low/Low+ tester series can measure natural water, verify reverse osmosis system operation and tap water quality. Check nutrient solution concentration in hydroponics applications. TDScan High/High+ models measure salt water, wastewater, cooling tower water, and boiler condensate. Measure salinity for ponds and recirculating systems. Check saline and chemical levels in pools and spas.

Main Features :

  • Waterproof, Dustproof Housing - IP67 rated, ideal for harsh field conditions. Plus it floats!
  • User-Replaceable Sensor - reuse the same tester body
  • Microprocessor-based Functions - for fast, stable readings
  • Ultra-Low Resolution (Up to 0.1 ppm) for pure water applications
  • Temperature Readout (TDScan Low+/High+/Pure+) at the touch of buttons
  • Adjustable TDS Factor - offers better tester accuracy
  • Full Reading Displayed - no need to multiply the readout to obtain actual test values
  • Automatic Temperature Compensation (ATC) - ensures optimum accuracy under fluctuating temperatures
  • Auto-Power Off, Hold Function and Self-Diagnostic
  • Cup-Type Sensors (TDScan Low+/High+/Pure+) provides for small sample-volume measurements or direct immersion into test sample
  • Dip-Type Sensors (TDScan Low/High) allows direct immersion into sample
  • Valox sensor housing for good chemical compatibility and durability



Product Code






TDS Range 0 to 10.00 ppt 0 to 1990 ppm 0 to 10.00 ppt 0 to 1999 ppm 0 to 199.9 ppm
Resolution 0.10 ppt 10 ppm 0.01 ppt 1 ppm 0.1 ppm
Accuracy 1% Full Scale
Temperature Display - -5.0 to 55.0 C (0.5 C accuracy)
Temperature  Coefficient 2% per C
TDS Factor 0.4 to 1.0
Operating Temperature 0 to 50 C
Special Functions Self-diagnostic; Hold;  Auto-Power Off after 8.5 minutes
Power 4 x 1.4V button cell batteries

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We are proud to announce the launch of the Worlds First CFR 21 Compliant - Windows CE Driven Multi-Parameter 6000 Range of Bench Meters. Ideal for use in industries such as Pharmaceutical, Food & Drug Manufacture and Health & Human Services. Please click here for details.

We accept all major credit/debit cards - please contact us for our best possible prices!; any questions? Why not try our Technical Area where you will find an in-depth explanation of many relevant aspects within the field of electrochemistry! more..


Russell Mainstream Supply Ltd.


Cameron House, 8 Crown Square, Kingskettle, Cupar, Fife, KY15 7PW


Phone: +44 (0)1337 831192

Fax: +44 (0)1337 371192


Email: Sales@rmprocesscontrol.co.uk 



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