Water quality. Method for assessing the inibition of nitrification of activated sludge micro-organisms by chemicals and waste waters.

New: UPSELL service

Main informations

Collections

National standards and national normative documents

Publication date

December 1990

Number of pages

6 p.

Reference

T90-341

ICS Codes

13.020.40 Pollution, pollution control and conservation

13.060.70 Examination of biological properties of water

Classification index

T90-341

Print number

International kinship

ISO 9509:1989

Standard replaced by (1)

NF EN ISO 9509

April 1995

Standard Cancelled

Water quality. Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste water.

New: UPSELL service

- The UPSELL service allows you to easily update one of your standards.
- With a single click, add a new language, the Requirements or Redline+ service and add one or more additional users.
- Whether you are in the process of acquiring a standard or it is already available in your personal space, the UPSELL service is available at every stage to help you understand it and implement it within your organization.

Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ