How do you test DEF fluid?
Field Testing
- Visually inspect DEF for color and clarity.
- Do a “smell test”.
- Inspect exhaust piping and DEF injectors for presence of crystallization.
- Use a handheld DEF refractometer to measure the concentration specifications of the fluid to ensure 32.5% of the fluid is urea.
What is urea Bluedef?
Diesel Exhaust Fluid is a nontoxic solution of 67.5% purified water and 32.5% ultra pure automotive grade urea. Instead, when injected into the exhaust stream and passed over a catalyst, Diesel Exhaust Fluid helps convert NOx into nitrogen gas and water vapor – two harmless and natural components of the air we breathe.
Is there any difference in DEF fluids?
There is one operational difference to note: Like any water-based fluid, DEF expands when it is frozen (by approximately 7 percent). No anti-gelling additive or freeze point improver should ever be added to the DEF, as they will impede its ability to perform correctly and may damage SCR system components.
What percentage should DEF be?
32.5%
The concentration of the DEF must be 32.5% urea (+/- 0.7%). The DEF concentration should be checked when; the vehicle has been stored for an extended period of time, it is suspected that water has been added to the DEF tank, or the warning light appears on dashboard.
Can you test DEF with a coolant refractometer?
This refractometer is a portable multiuse tool for automotive owners. you can use it for testing urea concentration in automobile diesel exhaust fluid (DEF). you can also use it for testing windshield washer fluid based on ethanol or isopropyl alcohol.
How to use a refractometer to test glycol concentration?
Correcting glycol concentration is easy using on-site heat transfer fluid testing. We recommend testing your heat transfer solution concentration whenever the system has been serviced using an easy, on-site fluid analysis tool such as a refractometer. Refractometers measure the glycol concentration and gives the antifreeze freezing point.
What should urea concentration be on Def refractometer?
The ideal, or target reading is 32.5%. If under, more DEF con- centration is needed. If over, the urea concentration is too high. In reality, most DEF purchases will consist of premixed containers.
Which is the best refractometer for diesel exhaust fluid?
The proper concentration of Urea in Diesel Exhaust Fluid (DEF) is crucial to mitigating harmful NOx emissions and prolonging the life of expensive SCR components. The DEFinitive choice in DEF Testing. The MISCO digital refractometer is the ideal instrument for testing DEF to prevent the use of fluid that is outside expected values.
What kind of refractometer is used for Def testing?
The DEFinitive choice in DEF Testing. The MISCO digital refractometer is the ideal instrument for testing DEF to prevent the use of fluid that is outside expected values. MISCO refractometers meet or exceed the requirements of ASTM D7821 – 12, Standard Test Method for Field Test Determination of Urea Concentration in Diesel Exhaust Fluid (DEF).