BS EN ISO 23753-1:2019 Soil quality. Determination of dehydrogenases activity in soils Method using triphenyltetrazolium chloride (TTC)

Microorganisms
Quality
Soils
Microbiology
Biochemical methods of analysis
Soil testing
Enzymes
Determination of content
Chemical analysis and testing
Enzyme assay

Link: BS EN ISO 23753-1:2019 Soil quality. Determination of dehydrogenases activity in soils Method using triphenyltetrazolium chloride (TTC)
Source: BSI Standards

IEC TS 62271-304:2019 High-voltage switchgear and controlgear Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution

Link: IEC TS 62271-304:2019 High-voltage switchgear and controlgear Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution
Source: BSI Standards