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API (American Petroleum Institute) is a leader in the development of petroleum and petrochemical equipment and operating standards covering topics that range from drill bits to environmental protection. These embrace proven, sound engineering and operating practices and safe, interchangeable equipment and materials. Many have been incorporated into state and federal regulations and adopted by ISO for worldwide acceptance.
Short-term Evaporative Loss Estimation from Atmospheric Storage Tanks, First Edition
Standard published on 1.7.2016
Selected format:Performance of Full-bore Vortex Meters for Measurement of Liquid Flows, First Edition
Standard published on 1.7.2018
Selected format:Flow Conditioner Installation and Effects on Turbine Meters, First Edition
Standard published on 1.10.2017
Selected format:Liquid Hydrocarbon Measurement Uncertainty Calculations, First Edition
Standard published on 1.9.2020
Selected format:Documentation Report for API MPMS Chapter 11.3.3 and API MPMS Chapter 11.3.4, First Edition
Standard published on 1.5.2019
Selected format:Wet Gas Sampling, First Edition, Includes Errata 1 (2025)
Standard published on 1.5.2024
Selected format:Errata 1 to Wet Gas Sampling, First Edition
Adjunct of the standard published on 1.6.2025
Selected format:Vapor Pressure of Heavy Petroleum Liquids for Estimating Emissions, First Edition
Standard published on 1.11.2024
Selected format:Measurement of Produced Water for Custody Transfer, First Edition
Standard published on 1.6.2025
Selected format:Design, Construction, Operation, Maintenance, and Inspection of Terminal and Tank Facilities,Fourth Edition
Standard published on 1.3.2026
Selected format:Latest update: 2026-08-21 (Number of items: 2 298 377)
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