User Guide to Thresholds and Classification - Environmental ...

185User Guide for Thresholds and Classifications12.2 and Table 12.3. In these cases the mixture could be classified according to those data. On occasion,when it is expected that the skin corrosion or irritation or the reversible or irreversible eye effects of aningredient will not be evident when present at a level above the generic concentration or cut-off valuesmentioned in Table 12.2 and Table 12.3, testing of the mixture may be considered. In those cases, the tieredweight of evidence strategy should be applied as referred to in section 12.3 and Table 12.1, and explained indetail in this chapter.If data show that an ingredient(s) may be corrosive or irritant at a concentration of