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Why you must have it?
EPA regulations require all diesel engines manufactured on or after January 1, 2010 to meet lowered NOX emissions standards. Most heavy duty engine (Class 7-8 trucks) manufacturers, have chosen to equip SCR, like Detroit Diesel (DD13, DD15, and DD16 models), Cummins (ISX line), PACCAR, and Volvo/Mack. SCR-equipped engines require the weekly addition of Diesel Exhaust Fluid (DEF, a kind of urea solution) to enable the process, and to ensure the SCR system work properly, operators must ensure the DEF concentration in their vehicle being at about 32.5 percentage.
This refractometer is designed for measuring the Diesel Exhaust Fluid (DEF) concentration, makes it very quick and easy to test the quality of DEF, just need a few drops of the fluid and a few seconds, you can get the result.
ATC Function
An automatic temperature compensation range from 10~30℃ will make result more accurate. As long as the ambient temperature of prism does not change, the sample size is so small that it will quickly come to the same temperature as the refractometer. If ambient temperature changes significantly then you will need to rezero the refractometer with water.
Easy to Operate
Only 3 steps to help you know your diesel exhaust fluid condition in a quick and easy way:
- Calibrate the refractometer to 0
- Place a liquid sample to be tested on the main prism and close the light plate
- Check the readings through the eyepiece under light source
Portable Package
The main part of Urea Concentration Refractometer is made of aluminum alloy, light but durable; a carrying case is included to protect your refractometer from dirt and damage; no battery is needed.
Specifications：
- Size: Φ27*160mm
- ATC range: 10~30℃
- Graduation: 0.2%
- Measuring scale range: 0%-40% urea concentration
- Material of main body: aluminum alloy
Package Includes:
- 1* refractometer
- 3* suction tube
- 1* screw driver
- 1* cleaning cloth
- 1* instruction manual
- 1* firm plastic storage case
Cindi & Rick
2025-09-05 15:22:20
It’s easy to use and give you a definitive reading of DEF quality.
Randal D. Tebeau
2025-08-26 09:24:10
Product does exactly what it claims to do. Very easy to use, calibrate and perform testing. An fairly inexpensive tool that gives you a piece of mind regarding DEF being okay or not.
My Opinion
2025-08-18 13:34:09
I have tested newly purchased DEF. The result was a little off. Then calibrated with distilled water and re-tested. The result was much close to 32.5% that is the expected dilution. I did not try to re-calibrate and re-test again at this point. Overall, I think, it was a test of the tool more that the test of the DEF fluid.There are many discussion threads about DEF quality. The overwhelming point is that DEF liquid in a sealed container cannot be anything but the exact formulation by the whatever is the standard API designation.This tool will simply confirm that you got what you paid for when buying DEF.Not sure how helpful it may be for a fleet maintenance program, but for a home mechanic this tool is nice to have. It probably will not make any "revelations" about the quality of DEF fluid purchased at Walmart or another retail outlet as long as you know that the product is fresh and the container was sealed when you bought it.
Dan Leininger
2025-07-25 14:23:18
Found this easy to use and easy to read the results. A must for confirming proper DEF concentrations. Comes with a nice padded plastic box with two Pipettes. However, you may need something much longer to reach into you DEF tank. I use a coat hanger with a small loop at the end to reach into my DEF tank. Easily collects the necessary couple of drops needed for the Refractometer.
Serge Korovikovski
2025-07-18 13:16:00
Good work .
Holly I.
2025-05-25 11:40:09
Very good quality. I was really surprised by how cheap it is and how good the quality is. Thanks
Queen of the Universe
2025-01-28 11:41:52
This comes in a nice case with the extra suction devices. High quality refractometer for the DEF.
Marc
2025-01-18 18:39:27
Easy to read and use. Not much to it.
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