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OTR Digital AdBlue DEF Refractometer, Diesel Exhaust Fluid


  • $ 25999
  • Save $ 70

Refurbished unit, clean and glossy case, but it has a little shelf rash.  


The OTR Digital DEF Refractometer is the ideal tool for testing Diesel Exhaust Fluid (DEF) quality. Diesel Exhaust Fluid is used in every commercial truck since 2010, and all off highway diesel engines had to meet Tier IV guidelines in 2014. This means there are literally millions of diesel engines in use every day that require DEF to operate properly.

The OTR Digital DEF Refractometer is the ideal method for testing your DEF quality. Simply place a few drops of DEF in the stainless steel testing area, press the button, and you will have your results in seconds on an easy to read display. You can easily take multiple readings to ensure you have the most accurate results possible.

Easy to carry case with Instructions
Digital DEF Refractometer
Eye Dropper


Type: Refractometer
Brand: OTR
Product Line: Digital AdBlue DEF Refractometer
Class: Digital
Range: 0.0 to 55.0% Urea in Diesel Exhaust Fluid (DEF), 1.3330 to 1.4200nD, 1.000 to 1.500s.g. Battery Acid
Resolution: 0.1% DEF, 0.0001nD, 0.001s.g.
Accuracy: ±0.2% DEF, ±0.0003nD, ±0.005s.g.
ATC: Yes (5 to 35°C)
Overall Dimensions: 4.75 x 2.25 x 1" (121 x 58 x 25 mm)


- fast and precise results
- large LCD (reading and temperature)
- waterproof ABS housing IP 65
- automatic temperature compensation
- small amount of sample
- simple calibration with distilled water
- stainless steel sample tray with glass prism
- easy operation with three buttons
- battery control system
- automatic shutdown after 1 min. of no-operation

This tool comes with a 12-month warranty.