Paragraph 9 Classification by the conventional method as corrosive

(1)

In this Schedule a preparation shall be regarded as “very corrosive” if it has been classified as corrosive with the risk phrase R35 (causes severe burns).

(2)

The following preparations shall be regarded as very corrosive—

(a)

preparations containing one or more substances classified or regarded as very corrosive in 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 in the case of gases) where the substance or substances do not appear in the approved list or appear in it without concentration limits;

(b)

preparations containing more than one substance classified or regarded as very corrosive 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 very corrosive substance in the preparation by the corrosive (R35) limit specified for that substance is 1 or more, i.e.—

\sum (\frac{P_{C.R35}}{L_{C.R35}}) \geq 1

where—

PC.R35 the percentage by weight of each very corrosive substance in the preparation,
LC.R35 the corrosive (R35) limit specified for each very corrosive substance expressed as a percentage by weight.