This tester has been designed to allow the DEF to be tested for urea strength. For the diesel engine emissions system to function correctly the strength of the DEF solution must be maintained at 32.5% urea; over time the strength of the solution can change by (a) evaporation causing the water component of the solution to reduce, or (b) contamination. Any of these can cause variations in DEF quality and strength which will be flagged up by the engine's onboard diagnostic system (DEF warning light).

Features and Benefits
• Very easy to use and displays a clear pass or fail result regardless of the temperature of the sample
• Easy to use and read tester
• Gives a clear pass/fail result
• Accurate result regardless of sample temperature

Typical Applications
• All vehicles fitted with diesel engines using a Urea solution at 32.5% as a diesel exhaust fluid (AdBlue®)

Notes
• Always wash device internals with distilled water after use