P-29, r. 1 - Regulation respecting food

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9.3.3.11. Containers for canned sea food: A container enclosing canned sea food products must be completely watertight and hermetically sealed, without any bulging, traces of leaks or other external sign that might indicate spoilage of the products.
Such container must enclose only the maximum quantity of products that may be introduced without altering the appearance, quality or state of preservation of those products.
O.C. 1055-82, s. 14.