TDSTestr 11 - water quality monitoring

TDSTestr 11

  • Warranty This product is covered by a 2 year meter warranty
  • Valox Sensor Casing Superior chemical durability
  • Reduced Operating Costs Tester body can be used again and again with user-replaceable sensor
Product Options


If you require a quick and easy to use pocket tester to measure Total Dissolved Solids in °C or °F the Eutech TDSTestr® 11 is the perfect option. It now has a wider measuring conductivity range from pure water to waste water as well as measuring up to 20.00ppt with an accuracy of ±1% full scale accuracy. This long lasting device has sensor elements made with industrial grade SS316 to ensure superior chemical durability to protect against harsh samples. User-replaceable sensors reduce operating costs, with the advantage of the body being able to be used again and again. The Eutech TDSTesttr® 11 is rugged and waterproof to IP67 standards so the tester keeps good even in wet conditions.

Dual range options with selectable or auto-ranging options enable more media measureability with one tester, °C or °F options can be selected easily by the press of a button and the non-volatile memory retains calibration settings even if the batteries run out. Featuring a large screen which displays temperature, display mode, Automatic Temperature Compensation and battery level make this tester ideal for on-the-go measuring.

Manufactured by: Eutech Instruments
Model: TDSTestr 11

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Water and wastewater treatment
Boiler blow-down
Electroplating rinse tanks
Drinking water
Printing Industry
Aquariums and fish farms
Swimming pools


Range .. to 1000 ppm
.. to 10.00 ppt
Resolution 10 ppm
0.10 ppt
Accuracy ±1 % of full scale
ATC Yes (0 to 50 °C / 32 to 122 °F)
Temperature Coefficient 2 % per °C, fixed
Calibration Point 2 manual
Temperature Display Yes
Range 0 to 50.0 °C / 32.0 to 122.0 °F
Resolution 0.1 °C / 0.1 °F
Accuracy ±0.5 °C / ±0.9 °F + 1 LSD
Calibration ±5.0 °C / ±9.0 °F
Non-Volatile Memory Yes
Auto Power-Off 8.5 minutes after last key pressed
Power Requirement 4 x 1.5 V ‘A76’ micro alkaline batteries (included)
Battery Life More than 150 hours
Dimension / Weight Tester : 16.5 x 3.8 cm ; 90 g
Boxed : 18.5 x 6.5 x 5 cm ; 200 g



Total dissolved solids (TDS) is a measure of the combined inorganic and organic substances dissolved in water. It is directly related to the electrical conductivity of water and as such can be used as an indication of change.
TDS is only relevant in freshwater systems as salinity will dramatically increase the conductivity and therefore apparent TDS.
TSS are particles that are larger than 2 microns found in the water column. Anything smaller than this is called a dissolved solid.