Fluids blend easily with all acrylic colours, and readily tint gels, mediums, gessoes and grounds. Fluid Acrylics are extremely versatile, and ideal for fine brushwork, glazing, staining, water media techniques and many more. Mix Fluid Acrylics with Airbrush Medium for airbrush application of artwork including textiles.
The Lightfastness Ratings are provided by the American Society for Testing and Materials (ASTM) in the standard for "Artists Acrylic Emulsion Paints". (ASTM D 5098, Annual Book of Standards, Volume 6.02).
Colours with a Lightfastness Rating of “I” are considered Excellent ("Exc.") and those with a Lightfastness Rating of “II” are Very Good ("V.G."). Where Lightfastness Ratings have not been obtained according to ASTM test protocol, "NA" is indicated in the table. In these cases, data from pigment manufacturers and our own test facilities have been used and an appropriate description assigned under Permanency.
Opacity/Transparency, we have determined that an eight-point scale is most appropriate for describing opaque) to 8 (most transparent) to indicate the relative opacity/transparency of that colour.
The C.I. (Colour Index) Name is an internationally recognized code assigned to a particular "colourant." The C.I. Name consists of the category (type of dye or pigment), general hue and serial number assigned, based on its chemical constitution. For example, PB 60, Anthraquinone Blue, indicates a specific Pigment Blue. The C.I. Number is a five-digit reference number assigned in the Colour Index based on the chemical structure of a colourant, regardless of usage class.