Testing Services: Contaminants (Other)

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Method	Test	Test Details	Volume	Price ($US)
D 4176	Visual Inspection	D 4176 / Visual Inspection The D4176 Visual Inspection provides a visual assessment of fuel quality. Procedure 1 looks for visual evidence of haze, water droplets, and/or sediment. Procedure 2 uses a numerical description for the strength of haze present in the fuel.	500 mL	$17.00
D 6584	Free and Total Glycerin Monoglycerides Diglycerides Triglycerides	D 6584 / Free and Total Glycerin The D6584 Free and Total Glycerin method for biodiesel measures the amount of free glycerin (glycerin by itself) and glycerides (glycerin attached to fatty acid chains- mono-, di- and triglycerides). The method will report a Total Glycerin value which is the combined amount of free glycerin plus the amount of glycerin bound by fatty acid chains. These compounds are residual contaminants of the biodiesel production process.	10 mL	$83.00
D 6974	Microbial Count (Proc. C)	D 6974 / Microbial Count (Proc. C) The D6974 Microbial Content method gives an approximation for the bacterial and mycological (molds and fungi) content of the fuel. The D6304 KF Moisture content along with the Microbial content can provide a very useful snapshot of fuel quality. This method is not routinely used for gasoline or gasoline blends due to the general inability for microbes to grow successfully in these fuels.	500 mL	$56.00
D 7716m	Methanol Content	D 7716m / Methanol Content The D7716m Methanol in Glycerin method determines the amount of methanol in crude glycerin. The method is slightly modified with a more robust calibration curve that will capture the higher methanol content typically found in crude glycerin samples.	5 mL	$56.00
D 7872 (m)	Polymer Content by Gel Permeation Chromatography	D 7872 (m) / Polymer Content by Gel Permeation Chromatography The D7872m Polymer Content by Gel Permeation Chromatography is a slightly modified method for determining the polymer content of liquid fuels. Polymers are commonly found in pipeline additives and cold-flow additives and, when in excess, can cause issues like filter plugging.	10 mL	$200.00
EN 14110	Methanol (Biodiesel)	EN 14110 / Methanol (Biodiesel) The EN 14110 Methanol Content method determines the amount of residual methanol in biodiesel.	5 mL	$58.00

*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 December 31, 2024 - February 28, 2025

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