How to Test Diesel Fuel Yourself
Simple On-Site Diesel Fuel Testing with Field Kits.
You don’t need a lab to know if your diesel fuel is contaminated. Field test kits provide fast, clear answers.
Basic Steps to Test Diesel Fuel
- Draw a representative fuel sample from the tank or system
- Use the appropriate test kit (water, microbial, or clarity)
- Follow the instructions for mixing, shaking, or dipping
- Compare results to the included chart or color scale
What You Can Detect with Field Test Kits
- Free and emulsified water
- Microbial growth and “diesel bug”
- Visible contamination and sludge
When to Test Diesel Fuel
- Before load testing generators
- After fuel deliveries
- Before storm or outage seasons
- When fuel has been stored for more than 6–12 months
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