




Keep your SCR system running reliably by checking DEF for oil, diesel, gasoline, or other hydrocarbon contaminants before topping off or servicing. These DIP and DETECT strips provide an inexpensive, portable way to verify DEF purity on-site—no lab required. The pack contains 100 individually usable strips, ideal for fleets, maintenance shops, and heavy-equipment operators who need routine screening.
Results are visible within seconds of dipping the strip into the DEF tank, so you can act immediately when contamination appears. The reactive chemistry produces a distinct color change when hydrocarbons are present, making interpretation simple for technicians.
The strips are formulated to detect a broad range of hydrocarbon contaminants including diesel, lubricating oil, gasoline and other petroleum products that can compromise DEF and SCR components. They identify contamination sources that would otherwise be invisible in routine fluid checks.
Using the strips takes only a few seconds: immerse the reactive pad into the DEF, withdraw, and compare the pad color against the expected clean color. No special tools are required—dispose of each strip after a single use.
Early detection of hydrocarbon contamination prevents progressive damage to SCR hardware by allowing targeted cleaning or fluid replacement before parts fail. Regular screening reduces downtime, lowers the chance of costly repairs, and supports compliance with emissions maintenance best practices.
Who is this for: maintenance crews, fleet managers, diesel technicians, DEF suppliers, and equipment renters who need fast, reliable contamination screening. The pack of 100 strips is well suited to busy shops or field crews that perform routine checks across multiple vehicles or storage tanks and want a practical, low-cost way to protect SCR systems and maintain DEF quality.
Q: Can these strips detect small amounts of oil in DEF?
A: Yes — the reactive pad is sensitive to low-level hydrocarbon contamination and shows a visible color change.
Q: Are the strips reusable or single-use?
A: Each strip is designed for single use; dispose of it after reading the result to avoid false readings.
Free shipping across Canada on every order, with no minimum. Orders are processed within 1 business day and standard delivery across Canada usually takes 2 to 5 business days after processing, with tracking by email. See the shipping policy.
Free 30-day returns. You have 30 days from delivery to start a return. Return shipping is free: email us your order number and we send a prepaid label. See the return & refund policy.
Not sure it fits? Email northtrailauto@gmail.com with your year, make, model and engine and we reply within 1 business day.




