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For example, it is important to test for a complete reaction and soap content before washing biodiesel (to prevent emulsions).

Also, there are several tests to help you conclude whether or not your biodiesel has been completely washed.

And finally, there are home tests to determine contaminant levels in your finished fuel, as well as ways to determine cloud and gel points.


Testing Biodiesel Before You Wash:

27/3 Test - determines if your biodiesel has been fully reacted.

Bromophenol Blue Test - calculates the soap content in unwashed fuel.


Tests While Washing Biodiesel:

Clarity Test - check the clarity of the exiting wash water... a good preliminary check.

Wash Water pH Test - test for soap in biodiesel by comparing the pH of the water before the wash, to it's pH after the wash.

Shake-Em Up Test - to be used with the other two, basically you shake biodiesel with water and see how easily and cleanly they separate. Dirty water is an indication the biodiesel needs more washing.

Soap Titration Test - extremely accurate, down to the PPM.


Quality and Property Tests for Finished Fuel:



pHLip Test - This test will let you know if your fuel passes for glycerin, free glycerin, catalyst, oxidation amounts. It is also used to test for soap in biodiesel.

Clarity Test - determine if there is water present in the finished fuel.

Cloud Point Test - find the temperature at which your fuel starts to cloud.

Gel Point Test - determine the temperature at which your fuel will begin to gel.

Tests to do Before you Wash>>>

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