18R3. The colouring shall be effected by adding to the fuel oil a mixture composed of 1 part of colouring agent, containing a red tincture, a tracer and aromatic solvents, and of 12 parts of fuel oil, in a proportion of 182 litres of the mixture for each million litres of fuel oil.
The colouring of fuel oil may also be effected by adding to the fuel oil the colouring agent referred to in the first paragraph in a proportion of 14 litres of colouring agent for each million litres of fuel oil.
Notwithstanding the foregoing, where the fuel oil is coloured in accordance with section 18R6, the colouring shall be effected in the manner prescribed in the first paragraph.
R.R.Q., 1981, c. T-1, r. 1, s. 18.3; O.C. 3470-81, s. 4; O.C. 2717-83, s. 4; O.C. 1656-86, s. 1; O.C. 1635-96, s. 34.