Classification by the conventional method as irritant
13. The following preparations shall be regarded as eye irritants—
(a)preparations containing one or more substances classified or regarded as irritant to which is assigned the risk phrase R41 (risk of serious damage to eyes) or R36 (irritating to eyes) in individual concentrations exceeding—
(i)either the concentration specified in the approved supply list for the substance or substances under consideration, or
(ii)the concentration specified in paragraph 4 of Part II of this Schedule (Table IV or Table IVA) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits;
(b)preparations containing more than one substance classified or regarded as irritant to which is assigned the risk phrase R41 or R36 in individual concentrations not exceeding the limits specified either in the approved supply list or in paragraph 4 of Part II of this Schedule (Table IV or Table IVA) if the sum of the quotients obtained by dividing the percentage weight of each irritant substance in the preparation by the irritant (R36) limit specified for that substance is 1 or more, i.e.—
where—
PXi.R41 the percentage by weight of each irritant substance to which is assigned the risk phrase R41 in the preparation,
PXi.R36 the percentage by weight of each irritant substance to which is assigned the risk phrase R36 in the preparation,
LXi.R36 the irritant (R36) limit specified for each irritant substance expressed as a percentage by weight to which is assigned the risk phrase R41 or R36 in the preparation.