Foreword

Foreword

Hauptteil

1Scope

2Normative references

3Principle

4Reagents and media

4.1Reagents

4.2Media

5Apparatus

6Test environment and interferences

6.1Test environment

6.2Interferences

6.2.1Moisture in the needle of the syringe

6.2.2Oxygen contamination

6.2.3pH of the medium

6.2.4Quality of the caps of the bottles

6.2.5Remaining substrates in the sludge

6.2.6Volatile chemicals

7Procedure

7.1Test set-up and preliminary test

7.1.1Test set-up

7.1.2Preliminary test

7.2Test materials and controls

7.2.1Test materials

7.2.1.1Test compound solutions

7.2.1.2Waters and wastewaters

7.2.2Reference compound and controls

7.3Addition of the test materials

7.4Addition of the inoculum and the test medium

7.5Incubation of bottles and pressure measurement

7.6pH measurement

8Calculation

9Validity criteria

10Test report

Annex ACalibration of the pressure meter (informative)

Annex BTesting of liquid samples and sludges (informative)

B.1General

B.2Liquid samples

B.3Sludges

Annex CExpression of results in tests with wastewater (informative)

Bibliography