API 11.1 Calculations

As the only authorized reseller globally, Quorum Software offers the most direct route to compliance with the industry standard, API MPMS Chapter 11.1. These well-established procedures apply to crude oils, liquid refined products, and lubricating oils and guide the correction of temperature and pressure effects on density and volume of liquid hydrocarbons.
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Why API 11.1 Calculations?

Calculate Net Inventory

Assess asset value through one integrated system.

Audit Field Measurement

Ensure accurate post-purchase measurement data.

Validate Flow Computers

Record flow rates with precision and consistency.

Generate Custody Transfer Tickets

Verify crude oil transfers with compliance and ease.

Why FLOWCAL Sets the Standard for Measurement Compliance

Gain confidence in every measurement—streamline audits, reduce risk, and stay ahead of regulatory demands with a system built for your operations.

“It gives you the validation of, I’m going to get the right answer if I use this app.” 

- Tim Harwell, Sr. Manager Crude Data Services

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Methods of utilization
to meet your needs

123

Unique Customers Utilizing API
11.1 Through Quorum Software

80%

North American Midstream Users Depend
on FLOWCAL and the Field Applications

How to Access the API 11.1 Calculations

Available as a secure PDF or a hardcover document.

The Microsoft Windows-based application is designed to calculate the Volume Correction Factor (VCF) tables outlined in API MPMS Ch. 11.1. The VCF application can be used to calculate net corrected volumes quickly and easily.

The subroutines for API MPMS Ch. 11.1 are available in electronic form as a Microsoft Excel add-in, dynamic-link library (DLL), C-Code (source code), or the combined VCF software suite.

Additional Resources