Where an organisation used for sampling and analysis of indoor air or for analysis of emissions from building products is not accredited to ISO / IEC 17025, the organisation must be accredited either by a national accreditation body, or by a member of any one of the following accreditation groups:
European Cooperation for Accreditation
International Accreditation Forum
International Laboratory Accreditation Cooperation
The accreditation must specifically covering sampling and analysis of indoor air or analysis of emissions from building products.