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ISO 20676:2018 Natural gas — Upstream area — Determination of hydrogen sulfide content by laser absorption spectroscopy
ISO 6974-3:2018 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 3: Precision and bias
ISO 13605:2018 Solid mineral fuels — Major and minor elements in coal ash and coke ash — Wavelength dispersive x-ray fluorescence spectrometric method
ISO 17782:2018 Petroleum, petrochemical and natural gas industries — Scheme for conformity assessment of manufacturers of special materials
ISO 12156-1:2018 Diesel fuel — Assessment of lubricity using the high-frequency reciprocating rig (HFRR) — Part 1: Test method
ISO 20815:2018 Petroleum, petrochemical and natural gas industries — Production assurance and reliability management
ISO 18796-1:2018 Petroleum, petrochemicals and natural gas industries — Internal coating and lining of carbon steel process vessels — Part 1: Technical requirements
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