fuel sampling

A fuel sample is necessary to determine the condition of your tank. We utilize a fuel sampler that is pictured to the left.

The sampler is lowered into the fuel tank and when it hits the bottom a valve is opened. In approximately 5 - 10 seconds a 4oz fuel sample is taken.

The sample height can be changed by using a 1/4" - 20 threaded rod to adjust how far off the bottom of the tank the valve opens. Retrieve the fuel sampler and dispense the sample into a clear plastic or glass jar. THIS SAMPLE IS THEN SENT FOR LAB ANALYSIS.

We will Look for clarity and uniform color, particles of rust and debris, sludge, and Layers of color. This may indicate bottom water or
phase separation. Samples from different levels can be taken to determine the amount of contamination in the tank.


  1. Sample 1: A sample of good clean fuel
  2. Sample 2: Water - which is heavier than the fuel, settles to the bottom.
  3. Sample 3: Dirt. This contamination was a very fine silt.
  4. Sample 4: dyed red to indicate that it is for off road use only. The color can range from a light rosy red to a dark almost blackish red depending on the fuel quality and the amount of dye used to color it.
  5. Sample 5: Fuel breakdown caused by bacteria or microbial activity.