What is a product group?

Products that have very similar physical and chemical properties and application can be considered as a product group. Classifying products as a group must be first agreed on with the technical working group. The product groups are formed in the technical working group based on the detailed information about the products concerning their chemical and physical characteristics. We will take the suggestions from the manufacturer in consideration when forming the groups.

You can apply for the product grouping by filling in the M1 application form. Please tick “New application” and attach a product grouping table (e.g. an Excel-file) which includes the detailed technical product information regarding the entire product group. Please also attach technical data sheets (if applicable). Please advise clearly that the application is about product grouping.


Products should be tested in an approved testing laboratory before admitting the application. Sample selection, analysis and measurements of material emissions must be performed by a laboratory from the list of approved testing laboratories. Practical information concerning the selection, packaging and delivery of the sample can be received from the laboratory.

Additional information about taking the laboratory sample, packaging, and testing can found in the Testing Protocol and in EN 16516:2017. The applicant must inform the testing laboratory about the information concerning the product sampling by using the sampling report obtained from the laboratory.

The parameters:

  • The emission of total organic compound (TVOC)
  • Formaldehyde (HCOH) emission
  • Ammonium (NH3) emission
  • The emission of compounds (CMR) belonging to category 1A or 1B in Annex VI to Regulation (EC) No 1272/2008 
  • Odour


After receiving the test result from the testing laboratory you can apply for M1-classification. Please attach following documents to your application:

  • Test report
  • Technical data sheet
  • Safety Data Sheet / Material safety data sheet (when relevant)

All the information about the products is handled confidentially in the technical working group, which is formed by neutral specialists. The group holds a meeting once a month. The meeting dates can be found here. The classification is valid for three years at the time.

We receive plenty of M1-application, so we ask you to send us your applications in good time before the meeting date, at least three working days prior to the meeting.

If the composition and method of manufacturing the product has not changed, the classification can be continued with a continuation application for another three years without testing. Please attach the latest versions of the product information sheets to your continuation application.

After 6 (3 + 3) years the product must be tested again and a new test report delivered with the renewal application. You can find the different application options (new, continuation or renewal) in the application form.

In the case of a product group certificate you must contact the technical working group before sending products to testing. The technical working group will decide which product(s) should be tested.

The certificate validity, quality control and obligation to notify changes

The validity of the label is always granted for three years at the time. During this time the company has the right to use the M1-logo on their products and in their marketing material. The M1-logo is a registered trademark, which use is administrated by The Building Information Foundation.

The certificate holder is obligated to inform us about the possible changes in the products manufacturing methods, chemical content or physical characteristics, if these will have influence on the product emission characteristics.

Quality control of the classified products

The quality of the the classified products is controlled by random sampling each year. The technical working group selects the product to be tested once a year.

A randomly selected product, which test result do not comply with the M1-limit values will be removed from the database and the right to use the M1-label is terminated.