====意义和用途====== 4.1 本试验方法用于根据规范要求初步确定细骨料的可接受性 C33/C33M 这与有机杂质有关。 4.2 本试验方法的主要价值是提供警告，指出可能存在有害数量的有机杂质。当进行本试验的样品产生的颜色比标准颜色深时，建议根据试验方法进行有机杂质对砂浆强度影响的试验 C87/C87M .

====== Significance And Use ====== 4.1 This test method is used in making a preliminary determination of the acceptability of fine aggregates with respect to the requirements of Specification C33/C33M that relate to organic impurities. 4.2 The principal value of this test method is to furnish a warning that injurious amounts of organic impurities may be present. When a sample subjected to this test produces a color darker than the standard color it is advisable to perform the test for the effect of organic impurities on the strength of mortar in accordance with Test Method C87/C87M .