DS/EN ISO 23753-2:2011
Soil Quality - Determination of dehydrogenase activity in soils - Part 2: Method using iodotetrazolium chloride (INT)

Standard No.

DS/EN ISO 23753-2:2011

Release Date

2011

Published By

Danish Standards Foundation

Status

Be replaced 2020-11

Replace By

DS/EN ISO 23753-2:2020

Latest

DS/EN ISO 23753-2:2020

Replace

DS/ISO 23753-2:2005

Scope

This part of ISO 23753 specifies a method for determining soil dehydrogenase activity using 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride (INT). As the INT reduction is less sensitive to O2, the method is more reproducible than the TTC-method described in ISO 23753-1. It is not applicable for determining the dehydrogenase activity in upper layers (L, F, H horizons) of forest humus forms with low microbial activity (e.g. mor), or in soils showing reducing properties (e.g. waterlogged soils).

DS/EN ISO 23753-2:2011 history

• 2020 DS/EN ISO 23753-2:2020 Soil quality – Determination of dehydrogenases activity in soils – Part 2: Method using iodotetrazolium chloride (INT) – Amendment 1 (ISO 23753-2:2019/Amd 1:2020)
• 2011 DS/EN ISO 23753-2:2011 Soil Quality - Determination of dehydrogenase activity in soils - Part 2: Method using iodotetrazolium chloride (INT)
• 0000 DS/ISO 23753-2:2005