BS EN 16087-1:2020

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Soil improvers and growing media. Determination of the aerobic biological activity – Oxygen uptake rate (OUR)

Published By	Publication Date	Number of Pages
BSI	2020	16

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Description

This document describes a method to determine the aerobic biological activity of growing media and soil improvers or constituents thereof by measuring the oxygen uptake rate (OUR). The oxygen uptake rate is an indicator of the extent to which biodegradable organic matter is being broken down within a specified time period. The method is not suitable for material with a content of particle sizes > 10 mm exceeding 20 %.

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PDF Pages	PDF Title
2	National foreword
5	European Foreword
6	1 Scope 2 Normative references 3 Terms and Definitions 4 Principle 5 Apparatus 5.1 Testing facility 5.2 Pressure transducer 5.3 CO2-absorbent containing unit
7	5.4 Reaction vessel 5.5 Mixing device 5.6 Balance 5.7 pH meter 5.8 Dispenser 5.9 Glassware 5.10 Sieve 6 Reagents 6.1 Water of class 3 6.2 pH buffer 6.3 Macronutrient solution 6.4 Micronutrient solution
8	6.5 Complete nutrient solution 6.6 Nitrification inhibitor 6.7 CO2-absorbent 6.8 NaOH (0,5 mol/l) 6.9 HCI (0,5 mol/l) 7 Procedure 7.1 Sample preparation 7.2 Determination of moisture content and organic matter content 7.3 Starting the procedure
9	7.4 Respiration measurement 8 Calculations 8.1 Theoretical background
10	8.2 Calculations
11	9 Test report
12	Annex A (informative) Validation
13	Annex B (informative) Specific information on the OUR-test
15	Bibliography

Additional information

Status	Definitive
Pages	16
Publication Date	2020-01-23
ISBN	978 0 539 01767 0
Standard Number	BS EN 16087-1:2020
Title	Soil improvers and growing media. Determination of the aerobic biological activity – Oxygen uptake rate (OUR)
Identical National Standard Of	EN 16087-1
Replaces	BS EN 16087-1:2011
Descriptors	Specimen preparation, Oxygen demand, Oxygen, Soils, Decomposition reactions, Biological analysis and testing, Growing media, Chemical analysis and testing, Determination of content, Degradation, Soil improvement
Publisher	BSI
Committee	AW/20
ICS Codes	65.080 - Fertilizers

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BS EN 16087-1:2020

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