Items tagged with CLEANING Files

File size: 2.37 MB Download

Stain test for Natural Stones (NT TR 595)

NT TR 595

  • This study focuses on the development of a standardised procedure for assessing the staining sensitivity of natural stones with and without surface treatment. The following different stone types with different mineralogy, chemistry and surface finishing were used: marble, mica-schist, ultrabasitee, granite and limestone.

File size: 2.03 MB Download

Natural stones: Determination of sensitivity to accidental staining (NT BUILD 514)


  • This Nordtest method describes a laboratory procedure for determining the sensitivity of natural stones when exposed to accidental staining. It contains a standardised procedure for the application of the stains, the cleaning and the assessment of the surface appearance after cleaning. It also covers the possibility to assess the efficiency of a surface treatment. Note that the method does not intend to present any de-staining technique!

File size: 22.87 KB Download

Floors: Ease of cleaning (NT BUILD 326)


  • The scope of this NORDTEST method is to determine the ease of cleaning of floor coverings.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.