ISO 1953:2025 pdf download,Coal — Size analysis by sieving. ISO 1953:2025 outlines reference methodologies for conducting size analysis of coal through manual sieving techniques, either wet or dry, utilizing test sieves with aperture dimensions ranging from 90 mm to 45 μm. For guidance on sampling procedures, please refer to Annex A. ISO 1953:2025 is relevant
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ISO 16159:2025 pdf download,Space systems — Launch pad and integration site — Facility, system and equipment failure analysis. ISO 16159:2025 sets forth guidelines for analyzing failures that may happen during the acceptance testing or operational phases of launch pad and integration site facilities, systems, and equipment. The established procedures outline the methodologies for investigating and
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ISO 18724:2025 pdf download,Water quality — Determination of dissolved chromium(VI) in water — Photometric method. ISO 18724:2025 outlines a procedure for the photometric measurement of dissolved chromium(VI) using various techniques, including manual methods (such as hand photometry), automated static systems (like discrete analyzer systems), or automated dynamic approaches (including flow injection analysis [FIA], continuous flow
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ISO 8739:2025 pdf download,ISO 8739:2025-Fasteners — Parallel grooved pins, with pilot point — Full-length diamond grooves. ISO 8739:2025 defines the properties of parallel grooved pins featuring a pilot point and full-length diamond grooves, which have a closed end on the insertion side, made from steel and stainless steel, with nominal diameters ranging from 1 mm
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ISO 23333:2025 pdf download,Natural gas — Upstream area — Requirements and testing of slick water. ISO 23333:2025 outlines the requirements, sampling procedures, testing protocols, inspection processes, and necessary accompanying documentation for slick water. It is relevant to the fracturing fluid systems utilized in hydraulic fracturing operations for shale gas extraction.
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