1 This International Standard is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products.
2 This International Standard specifies a method for determining the flow time of paints, varnishes and related products that may be used to control consist-ency. A method for the adjustment of paints to the correct application consistency at the application temperature is described in annex A.
3 Four flow cups of similar dimensions, but having orifice diameters of 3 mm, 4 mm, 5 mm and 6 mm, are specified. The method for their calibration is given.
4 The method is limited to testing materials for which the breakpoint of the flow from the orifice of the flow cup can be determined with certainty. This point is difficult to determine and reproduce for ma-terials with flow times in excess of 100 s due to slowing-down effects.
BS EN ISO 2431:1996 history
2019BS EN ISO 2431:2019 Paints and varnishes. Determination of flow time by use of flow cups
2011BS EN ISO 2431:2011 Paints and varnishes. Determination of flow time by use of flow cups
1996BS EN ISO 2431:1996 Paints and varnishes - Determination of flow time by use of flow cups