Water quality

ISO/DIS 25250 - Carbon fixation rate in farmed macroalgae — Method for sampling and analysis
Categories: Water. Examination. Biological properties
Committee: ISO/TC 234 (Fisheries and aquaculture)
Origin: ISO
Close date: 10 Dec 2025
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ISO/DIS 23817 - Ships and marine technology — Ballast water management systems (BWMS) — Procedures for commissioning and testing BWMS using electrolytic methods
Categories: Water. Industrial use
Committee: ISO/TC 8 (Ships and marine technology)
Origin: ISO
Close date: 15 Dec 2025
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ISO/DIS 25175 - Marine technology — Standard test method for performance of Reverse Osmosis (RO) and Nanofiltration (NF) membrane element
Categories: Water. Drinking
Committee: ISO/TC 8/SC 13 (Marine technology)
Origin: ISO
Close date: 15 Dec 2025
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