This part of ISO 5667 provides guidance on the procedures for preservation and handling of sewage and waterworks sludges, suspended matter, and saltwater and freshwater sediments for subsequent analysis.
BS 6068-6.15:1999 history
2009BS EN ISO 5667-15:2009 Water quality - Sampling - Guidance on the preservation and handling of sludge and sediment samples
1999BS 6068-6.15:1999 Water quality - Sampling - Guidance on preservation and handling of sludge and sediment samples