ISO 1247-2:2021 pdf download – Aluminium pigments for paints — Part 2: Vacuum metallized aluminium pigments.
6.3 Procedure 6.3.1 Test portion Weigh 10 g of the sample, to the nearest 0,1 g, in the 400 ml beaker (6.2.2). If it is required by agreement between the interested parties to determine the residue on a sieve of nominal aperture other than 45 µm, follow the determination described in 6.3.2, except that the mass of the test portion shall be reduced correspondingly to the smaller nominal apertures of the sieve. 6.3.2 Determination Half fill three containers (6.2.1) with the liquid (6.1.1). Mix the test portion with 100 ml of the liquid (6.1.1). Add a further 50 ml of the liquid with vigorous stirring. Pour the suspension slowly onto the surface of the test sieve (6.2.3), adjusting the speed of transference so that the majority of the suspension passes through. Wash the residue on the sieve by holding the sieve in the first container at a slight angle to the surface of the liquid and shaking the sieve backwards and forwards so that the screen surface passes just under and just above the level of the mixture. Continue this operation for 1 min and then repeat the procedure in the second container for about 2 min. When it is evident that no more material passes through the sieve, repeat the procedure in the third container with the liquid (6.1.1) for 2 min to 3 min. Wash down the sides of the sieve with a small stream of the liquid and collect the residue on one side. Transfer the residue, by washing with a minimum quantity of liquid, to the tared sintered glass filter (6.2.4) and apply suction. As soon as filtration is complete and the surface of the residue is apparently dry, place the filter in an oven at 105 °C ± 2 °C and heat at this temperature for 1 h. Weigh the residue to the nearest 1 mg.
7 Test report The test report shall contain at least the following information: a) all details necessary for complete identification of the product tested (the manufacturer, trade name, batch number, etc.); b) a reference to this document, i.e. ISO 1247-2:2021; c) the results of the tests, whether or not the product complies with the relevant specific limits; d) any deviation, by agreement or otherwise, from the test method specified; e) the date(s) of the test(s).