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AdBlue / DEF Tester (Diesel Exhaust Fluid)

- DEF Tester available on most diesel vehicles.
- Testing the urea solution concentration/content in DEF / AdBlue tanks.
- Testing at hot or cold temperatures.
- Easy to use and read. (Three floating discs for accurate reading)
- An aqueous urea solution made with 32.5% urea and 67.5% deionized water.