1 Scope
This Part of BS 3900 describes a method for assessing the fungal (mould) resistance of paints, varnishes
and lacquers with or without fungicidal additives, applied either as part of a multi-coat
system or separately.
In addition to the information given in the method certain supplementary information
detailed in clause 3 is necessary before this method can be used.
WARNING When carrying out this method it is essential to avoid inhalation of spores by the
operator and contamination by the spores of the laboratory. Guidance on precautions
is given in Appendix A and attention is drawn to BS 2011‑2.2J for more detailed advice.
NOTE 1 The method has been prepared to assess the resistance to fungal growth of paints applied
in the laboratory to specified panels. The principle may also be applied to production
applied coatings on sheet materials having established a criterion for assessment
but a claim to comply with this Part of BS 3900 cannot be made.
NOTE 2 The titles of the publications referred to in this standard are listed on the inside
back cover.