Abstract

ISO 23753-2:2005 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).


General information 

  • Status
     : Withdrawn
    Publication date
     : 2005-11
  • Edition
     : 1
    Number of pages
     : 5
  • Technical Committee
     : ISO/TC 190/SC 4 Biological characterization
  • ICS
     :
    13.080.30 Biological properties of soils

Life cycle

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