Testing Services: Calculated Methods

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Method	Test	Test Details	Volume	Price ($US)
D 976	Cetane Index of Distillate Fuels	D 976 / Cetane Index of Distillate Fuels The D976 Calculated Cetane Index is a calculation for estimating the cetane value of distillate fuels. D976 is not valid for biodiesel or diesel blends. D976 can be used as a substitute for the D1319 Hydrocarbon Types method (Aromaticity). Calculation that requires Density (D 4052) and Distillation (D 86).	115 mL	$102.00
D 4737	Cetane Index by Four Variable Equation	D 4737 / Cetane Index by Four Variable Equation The D4737 Cetane Index method uses a 4-variable equation to estimate the cetane value. This method is appropriate for diesel fuels that do not contain a cetane improver. The method is not valid for biodiesel or diesel/biodiesel blends (B6 to B20). Calculation that requires Density (D 4052) and Distillation (D 86)	115 mL	$102.00
D 4814	Driveability Index	D 4814 / Driveability Index The D4814 Driveability Index is an indirect measure of a fuel's volatility, therefore indicating the quality of engine start and warm-up. Fuels with a higher DI are less volatile than those with a lower DI. The Driveability Index is a calculation that requires D86 distillation and D4815 ethanol content and can be calculated for gasoline containing up to 15 % volume ethanol. Calculation that requires Distillation (D 86) and Ethanol Content (D 4815).	110 mL	$156.00
D 4814	Calculated V/L Ratio	D 4814 / Calculated V/L Ratio The D4814 Calculated V/L Ratio gives an approximation for the Vapor-Liquid ratio as measured by the D5188 Vapor-Liquid Ratio Temperature Determination test. The calculation requires D86 Distillation and D5191 Vapor Pressure and is applicable for gasoline containing up to 15 % volume ethanol. Calculation that requires Distillation (D 86) and Vapor Pressure (D 5191).	130 mL	$116.00

*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.