ISO/TC 147/SC 4

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ISO/TC 147/SC 4 refers to a subcommittee within ISO/TC 147, which focuses on water quality.

ISO/TC 147/SC 2 is a subcommittee under ISO/TC 147 that focuses on developing international standards for the testing and analysis of water quality. It works on methodologies for collecting and testing water samples to ensure water quality is accurately measured and meets safety standards for consumption and environmental protection.