Testing Services: Acidity/Corrosion

You must login to order tests.

Method	Test	Test Details	Volume	Price ($US)
D 130	Copper Corrosion at 50°C	D 130 / Copper Corrosion at 50°C The D130 Copper Strip Corrosion method determines the corrosiveness of the fuel to copper metal and is a general indication of the tendency to cause corrosion of metal surfaces.	50 mL	$40.00
D 664	Total Acid Number	D 664 / Total Acid Number The D664 Total Acid Number method measures the amount of free fatty acids and mineral acids in biodiesel and diesel blends (B6 to B20). Excessive acid values can lead to engine deposits and corrosion.	25 mL	$47.00
D 7795	Acidity (as acetic acid)	D 7795 / Acidity (as acetic acid) The D7795 Acidity in Ethanol method gives a quantitative measure of acidic compounds in ethanol and ethanol blends and expresses the result as acetic acid. Even very low concentrations of organic acids such as acetic acid can be very corrosive to fuel components and so it is important to assure that these acids are in very low levels.	75 mL	$46.00

*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.