ISO 16720:2005

Soil quality — Pretreatment of samples by freeze-drying for subsequent analysis

Publication date: Apr 4, 2005

General information

Current stage: 90.93 Effective date: Mar 5, 2026

Originator: ISO

Owner: ISO/TC 190/SC 3

Type: International Standard

ICS: 13.080.20

Languages: English French

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Status: Published

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Scope

ISO 16720:2005 specifies a method for pretreatment of soil samples by freeze-drying for subsequent analysis.
ISO 16720:2005 is applicable to soil samples for subsequent determination of elements or organic compounds recognized as non-volatile under freeze-drying conditions. Generally, ISO 16720:2005 can also be applied to samples from sludges and sediments.
This method is also applicable as a first step for the determination of dry matter (or water) content, for instance in the case of samples with high water content.

Life cycle

NOW

PUBLISHED
ISO 16720:2005
90.93 Standard confirmed
Mar 5, 2026