Ciallaíonn "táirgí peitriliam" na substaintí seo a leanas a tháirgtear go díreach nó go neamhdhíreach ó amh-ola – breoslaí, bealaidh, biotúman, céir, biotáille thionsclaíoch agus aon substaint raonfhairsinge, is é sin le rá, substaint a mbíonn a fiuchphointe deireanach ag gnáth bhrú an atmaisféir breis is 50ºC níos airde ná a fiuchphointe tosaigh.
"Petroleum products" means the following substances produced directly or indirectly from crude oil—fuels, lubricants, bitumen, wax, industrial spirits and any wide-range substance, that is to say, a substance whose final boiling point at normal atmospheric pressure is more than 50°C higher than its initial boiling point.