Biodiesel Cold Soak Filtration Test ASTM D6217

The ASTM D6751 Cold Soak Test

Cold Soak Filtration Test
• Part of ASTM D6751, quality standard for biodiesel fuels. Measures the diesel’s ability to clog fuel filters after being subjected to cold temperatures
• Performance based test, where results are reported in seconds (The lower the number, the faster the fuel flowed during the test)
• Every biodiesel producer and blender must pass this (and other) tests after October 1st, 2009

Test Overview – ASTM D 7501 – 09 Cold Soak
300mL of test fuel is chilled to 40F for 16hrs
• After 16hrs, it is allowed to come to room temperature on its own (no heat, no energy)
• Fuel is put into funnel and pulled through a 0.7? (micron) glass fiber patch with stainless steel support pulled by a vacuum and the pressure shall be between71.1 and 84.7 kPa (21 and 25 in. of Hg) below atmospheric.
• The amount of time it takes to empty the funnel (in seconds) is recorded
• Currently, Less than 360 sec. is required to pass
• Less than 200 sec. is recommended for -10° C or less climates.
ASTM D 7501 – 09 vessel

Read more about all of the other ASTM Tests for Biodiesel here:

About Utah Biodiesel Supply

Utah Biodiesel Supply is an industry leader in offering innovative ways to empower our customers to produce Biodiesel. From free online instructional videos on how to get started making this great renewable fuel to promotional items to help our customers proclaim their energy independence, Utah Biodiesel Supply has it covered. With the widest selection available of Biodiesel equipment, supplies, and promotional items, you're sure to learn something new about Biodiesel every time you visit.
Categorized: Biodiesel

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