Initial Grouping Clause Samples

Initial Grouping. The initial group is determined using Table 2. All submitted toxicity data for the product are compared with the table and the value giving the worst case ‘Initial Grouping’ (i.e. the test giving the most toxic response) is used as the Initial Group for the substance. Table 2 Initial OCNS Grouping Initial Grouping A B C D E Result for Aquatic toxicity data (ppm) <1 >1-10 >10-100 >100-1,000 >1,000 Result for sediment toxicity data (ppm) <10 >10-100 >100-1,000 >1,000-10,000 >10,000 50 50 · Aquatic toxicity refers to the Skeletonema costatum EC 1, Acartia tonsa LC 2, and Scophthalmus maximus (juvenile turbot) LC50 toxicity tests; and · Sediment toxicity refers to the Corophium volutator LC50 test.