Hazardous Products Regulations — 2.3
Definitions 2.3 (1) The following definitions apply in this section. production batch means a batch that results from a consistent production process using fixed physico-chemical parameters when there is no intention to alter the characteristics of the final product. ( lot de fabrication ) tested refers to a mixture for which there are data of a type referred to in subparagraph 2.1(a)(i), (ii) or (iv). ( testé ) Application of bridging principles (2) In the case of the health hazard classes set out in Subparts 1 to 10 of Part 8, the bridging principles set out in subsections (3) to (8) must be applied if there is an indication to that effect. Dilution (3) If a tested mixture that is classified in a category or subcategory of a health hazard class set out in Subparts 1 to 10 of Part 8 is diluted with a diluent, the following applies provided that the diluent is a mixture or substance that, with respect to that health hazard class, has an equivalent or less severe hazard classification than the least hazardous ingredient of the tested mixture and, based on established scientific principles, does not affect the classification of the tested mixture: (a) in the case of a tested mixture that is classified in a category or subcategory of a health hazard class set out in Subparts 1 to 3 of Part 8, either the method referred to in section 8.1.5, 8.2.11 or 8.3.11, as the case may be, must be used to establish whether the diluted mixture must be classified in a category or subcategory of a hazard class, or the diluted mixture must be classified in the same category or subcategory of the health hazard class as the tested mixture; or (b) in all other cases, the diluted mixture must be classified in the same category or subcategory of the health hazard class as the tested mixture. Production batches (4) The classification is the same for a mixture in all production batches of that mixture that are manufactured, produced or processed by the same supplier, unless there is a significant variation between the batches that affects the classification of the mixture. Increase in concentration of hazardous ingredient (5) If the concentration of a hazardous ingredient of a tested mixture is increased, the following applies: (a) in the case of the health hazard classes set out in Subparts 1, 4 and 8 to 10 of Part 8, if the tested mixture is classified in the Category 1 category of the health hazard class, the new mixture resulting from the increased concentration must be classified in the same category of the same health hazard class, without additional evaluation with regard to that hazard class; (b) in the case of the health hazard class set out in Subpart 2 of Part 8, (i) if the tested mixture is classified in the Category 1A subcategory of the health hazard class, the new mixture resulting from the increased concentration must be classified in the same subcategory of the same health hazard class, without additional evaluation with regard to that hazard class, or (ii) if the tested mixture does not contain any hazardous ingredient classified in the Category 1 category and is classified in the Category 2 category of the health hazard class, the new mixture resulting from the increased concentration must be classified in the same category of the same health hazard class, without additional evaluation with regard to that hazard class; and (c) in the case of the health hazard class set out in Subpart 3 of Part 8, (i) if the tested mixture is classified in the Category 1 category of the health hazard class, the new mixture resulting from the increased concentration must be classified in the same category of the same health hazard class, without additional evaluation with regard to that hazard class, or (ii) if the tested mixture does not contain any hazardous ingredient classified in the Category 1 category and is classified in the Category 2A subcategory of the health hazard class, the new mixture resulting from the increased concentration must be cla