12.—(1) Any plastic material or article which exceeds its overall migration limit by an amount not exceeding the analytical tolerance specified in sub paragraph (2) shall be deemed for the purposes of these Regulations not to exceed its overall migration limit.
(2) The following analytical tolerances shall be applied for limits of overall migration–
(a)20 mg/kg or, as the case may be, 3 milligrams per square decimetre in migration tests using as a simulant rectified olive oil or substitutes;
(b)12 mg/kg or, as the case may be, 2 milligrams per square decimetre in migration tests using other simulants referred to in Schedule 3.