This part of ISO 5667 provides guidance on procedures for the preservation, handling and storage of samples
of sewage and waterworks sludge, suspended matter, saltwater sediments and freshwater sediments, until
chemical, physical, radiochemical and/or biological examination can be undertaken in the laboratory.
The procedures in this part of ISO 5667 are only applicable to wet samples of sludge, sediment and
suspended matter.
NOTE Samples of sludge, sediment and suspended matter that are dried or freeze-dried behave similarly to dried
soils. For guidance on long- and short-term storage of (freeze) dried samples, see ISO 18512. For guidance on
freeze-drying, see ISO 16720.
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