NF EN ISO 9509
NF EN ISO 9509

NF EN ISO 9509

July 2006
Standard Current

Water quality — Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms

Le présent document spécifie une méthode d''évaluation de l''effet inhibiteur à court terme de la composition des eaux sur des bactéries nitrifiantes dans des boues activées.

See more
View the extract New: UPSELL service
Main informations

Collections

National standards and national normative documents

Publication date

July 2006

Number of pages

23 p.

Reference

NF EN ISO 9509

ICS Codes

13.020.40   Pollution, pollution control and conservation
13.030.20   Liquid wastes. Sludge
13.060.70   Examination of biological properties of water

International kinship

ISO 9509:2006

European kinship

EN ISO 9509:2006
Sumary
Water quality — Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms

Le présent document spécifie une méthode d''évaluation de l''effet inhibiteur à court terme de la composition des eaux sur des bactéries nitrifiantes dans des boues activées.
Replaced standards (1)
NF EN ISO 9509
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.

ZOOM ON ... the Requirements department

To comply with a standard, you need to quickly understand its issues in order to determine its impact on your activity.

The Requirements department helps you quickly locate within the normative text:

  • mandatory clauses to satisfy,
  • non-essential but useful clauses to know, such as permissions and recommendations.

The identification of these types of clauses is based on the document "ISO/IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents" as well as on a constantly enriched list of verbal forms.

With Requirements, quickly access the main part of the normative text!


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