3.1 Sensory requirements: light black to black, granular or loose powder, no mechanical impurities. 3.2 Technical indicators The technical indicators should comply with the provisions of Table 1. 3.3 The formula requirements should comply with the requirements of NY/T1112. 3.4 Ascaris egg mortality and fecal coliform count indicators should comply with the requirements of NY884. 3.5 Ascaris egg mortality and fecal coliform count indicators should comply with the requirements of NY884. 3.6 The limit indicators of arsenic, cadmium, lead, chromium and mercury should comply with the requirements of GB/T23349. 3.7 The net content should comply with the provisions of the Measures for Supervision and Administration of Measurement of Quantitative Packaged Commodities.