（1）本技术规范规定了动态表面浸出试验（DSLT），其目的在于确定每单位表面积的释放作为来自单片，板状或片状的无机和/或非挥发性有机物质的时间的函数，当它与水溶液（浸出剂）接触时。测试方法不适合在环境条件下挥发的物质。 （2）该测试是一个参数特定的测试，重点是确定和指定在特定条件下测试的参数特定属性。它不是为了模拟真实情况。将结果应用于特定的预期使用条件可以通过建模（本技术规范未包括）建立。 （3）水力传导性低的颗粒状建筑产品的改造（附件A）适用于颗粒之间排水能力差的颗粒，渗滤试验和实践中渗滤几乎是不可能的。 （4）试验方法适用于由多个方向（体积> 64 000mm 3（64cm 3））的最小尺寸为40mm的整体式试件组成的或多或少规则形状的试验部分。它也适用于表面积最小的板状或片状产品

(1) This Technical Specification specifies a Dynamic Surface Leaching Test (DSLT) which is aimed at determining the release per unit surface area as a function of time of inorganic and/or non-volatile organic substances from a monolithic, plate- or sheet-like product, when it is put into contact with an aqueous solution (leachant). The test method is not suitable for substances that are volatile under ambient conditions. (2) This test is a parameter specific test focusing on identifying and specifying parameter specific properties tested under specified conditions. It is not aimed at simulating real situations. The application of results to specific intended conditions of use may be established by means of modelling (not included in this Technical Specification). (3) The modification for granular construction products with low hydraulic conductivity (Annex A) applies for granular particles with so little drainage capacity between the grains that percolation in percolation tests and in practice is nearly impossible. (4) The test method applies to more or less regularly shaped test portions consisting of monolithic test pieces with minimum dimensions of 40 mm in all directions (volume > 64 000 mm3 (64 cm3)). It also applies to plate- or sheet-like products with surface areas of minimum 10 000 mm2 (100 cm2) exposed to the leachant. Products designed to drain water (e.g. draining tiles, porous asphalt) and monolithic granular products according to CEN/TS 16637-1:2014, Table 1, are also tested by this test method. All products to be tested are assumed to maintain their integrity over a time frame relevant for the considered intended use. (5) Metals, metallic coatings and organic coatings on metals are excluded from the scope of CEN/TS 16637-2 because the principles of this test (diffusion) are not obeyed by these products. Guidance on the need for testing of these products is under consideration. (6) For some coatings (e.g. some renders with organic binders according to EN 15824) in intermittent contact to water, physical and chemical properties might be changed in permanent contact with water. For these products CEN/TS 16637-2 is not appropriate. (7) Guidance on the applicability of the test method to a given product is outlined in CEN/TS 16637-1. NOTE 1 This test method is only applicable if the product is chemically stable and the matrix does not dissolve. For construction products that may be used in contact with water this usually should not be the case as construction products should then be dimensionally stable. If a product may substantially wear in its intended use, the test cannot provide proper information. If the product contains a substantial amount of water-soluble compounds, e.g. gypsum or anhydrite, the matrix may (partially) dissolve and lead to dimensional instability of the test piece. In this case the test standard also cannot be used. NOTE 2 Volatile organic substances include the low molecular weight substances in mixtures such as mineral oil. NOTE 3 It is not always possible to optimise test conditions simultaneously for inorganic and organic substances and optimum test conditions may also vary between different groups of organic substances. Test requirements for organic substances are generally more stringent than those for inorganic substances. The test conditions suitable for measuring the release of organic substances will generally also be applicable to inorganic substances.