2020DIN EN 16087-1:2020-04 Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR); German version EN 16087-1:2020
2020DIN EN 16087-1:2020 Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR)
1970DIN EN 16087-1 E:2018-11 Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR)
2012DIN EN 16087-1:2012 Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR); German version EN 16087-1:2011