Testing Services: Compositional Analysis

You must login to order tests.

Method	Test	Test Details	Volume	Price ($US)
Ca 5a-40	Free Fatty Acids	Ca 5a-40 / Free Fatty Acids The AOCS Ca 5a-40 method measures free fatty acid content in vegetable and marine oils, as well as animal fats. This test is most appropriate for feedstock sources for renewable fuels.	25 mL	$53.00
D 4815	Ethanol Content (E20 & lower blends)	D 4815 / Ethanol Content (E20 & lower blends) The D4815 Ethanol Content method measures the amount of ethanol in gasoline blends up to E20 (20 % ethanol). For ethanol amounts over 20 %, the D5501 method is more appropriate.	10 mL	$87.00
D 5501	Ethanol/Methanol Content (E21 & higher blends)	D 5501 / Ethanol/Methanol Content (E21 & higher blends) The D5501 Ethanol Content method measures the ethanol and methanol content of denatured fuel ethanol and higher ethanol blends (E21 to E85). For ethanol contents below 20 % (E0 to E20), the D4815 method is more appropriate.	15 mL	$115.00
D 7371	Biodiesel Content in Diesel, % (v/v)	D 7371 / Biodiesel Content in Diesel, % (v/v) The D7371 Biodiesel Content method determines the percent volume of biodiesel in a diesel/biodiesel blend. This test is different than the EN 14103 FAME method which determines the % mass of methyl esters in a B100 product.	10 mL	$36.00
EN 14103	FAME (GC)	EN 14103 / FAME (GC) The EN 14103 FAME method is used to determine the mass percent of methyl esters in a B100 product. This test should not be confused with the D7371 Biodiesel Content method that measures the amount of biodiesel (FAME) in a diesel blend.	10 mL	$99.00
In-house	Glycerin Content	In-house / Glycerin Content The Glycerin Content method (HPLC) was developed in-house to measure the glycerin content of the crude glycerin by-product of biodiesel production.	5 mL	$76.00
In-house	In-House, Feedstock Forensic Analysis	In-house / In-House, Feedstock Forensic Analysis The Feedstock Forensic Analysis was developed to give a compositional analysis of feedstock materials used for biodiesel production (fats and oils). This method uses standard gas chromatography at higher temperatures to give an approximation of diglyceride and triglyceride content, followed by mass spectroscopy (limited to a lower temperature) to give a breakdown of the free fatty acids, sterols, tocopherols, and any other compounds that may be present.	5 mL	$195.00
In-house	GC Combo	In-house / GC Combo This combined analysis uses GC/MS and gas chromatography to provide a detailed composition of fuel or feedstock materials, identify unknown compounds, and detect adulteration. It measures diglyceride, triglyceride, free fatty acids, sterols, tocopherols, and other compounds, and is effective for both product characterization and forensic investigations.	Call to confirm	$260.00

*Our goal is to provide results for standard samples within 72 hours of receipt of sample, and RUSH service within 24 hours for most tests. Turnaround time goals reflect normal business hours of 8am-4pm Monday through Friday, excluding weekends and observed holidays. RUSH service is available at 2X normal price. For RUSH service, please contact us ahead of time to reduce any delays.

**Prices are valid 09/01/25 - 06/30/26

***Testing prices performed by an outsource laboratory are subject to change without notice.