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OS GSO ISO 11961:2025/Amd1:2025
ISO 11961:2018/Amd 1:2020
Amendment to Omani Standard
Petroleum and natural gas industries — Steel drill pipe
OS GSO ASTM D6138:2025
ASTM D6138:23a
Omani Standard
Standard Test Method for Determination of Corrosion-Preventive Properties of Lubricating Greases Under Dynamic Wet Conditions (Emcor Test)
OS GSO ASTM D7371:2025
ASTM D7371:14(2022)
Omani Standard
Standard Test Method for Determination of Biodiesel (Fatty Acid Methyl Esters) Content in Diesel Fuel Oil Using Mid Infrared Spectroscopy (FTIR-ATR-PLS Method)
OS GSO ASTM D4048:2025
ASTM D4048:22
Omani Standard
Standard Test Method for Detection of Copper Corrosion from Lubricating Grease
OS 1656:2025
Omani Standard
Liquefied petroleum Gas- propane butane mixture
OS GSO ASTM D6681:2025
ASTM D6681:23
Omani Standard
Standard Test Method for Evaluation of Engine Oils in a High Speed, Single-Cylinder Diesel Engine—Caterpillar 1P Test Procedure
OS GSO ISO 16961:2025
ISO 16961:2024
Omani Standard
Oil and gas industries including lower carbon energy — Internal coating and lining of steel storage tanks
OS GSO ASTM D4289:2025
ASTM D4289:24a
Omani Standard
Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids
OS GSO ASTM D6277:2025
ASTM D6277:07(2022)
Omani Standard
Standard Test Method for Determination of Benzene in Spark-Ignition Engine Fuels Using Mid Infrared Spectroscopy
OS GSO ISO 20884:2025
ISO 20884:2019
Omani Standard
Petroleum products — Determination of sulfur content of automotive fuels — Wavelength-dispersive X-ray fluorescence spectrometry
OS 1656:2025
Omani Standard
Liquefied petroleum Gas- propane butane mixture
OS GSO ISO 3924:2025
ISO 3924:2019
Omani Standard
Petroleum products — Determination of boiling range distribution — Gas chromatography method