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ISO 25426 Natural gas. Upstream area. Determination of porosity of shale by helium pycnometry
Feedback closing date:
04/08/2026
ISO 14111 Natural gas. Guidelines to metrological traceability
Feedback closing date:
13/07/2026
Oil and gas industries including lower carbon energy. Standard cost coding system
Petroleum measurement systems. Pipe prover design, calibration and operation
Road vehicles. Specification of non-petroleum-based brake fluids for hydraulic systems