2.2.9.1.10.4.5.1

the classification of a mixture shall be based on summation of the concentrations of its classified

ingredients. the percentage of ingredients classified as "acute" or "chronic" will feed straight into the

summation method. details of the summation method are described in 2.2.9.1.10.4.6.1 to

2.2.9.1.10.4.6.4.