Q-2, r. 27 - Regulation respecting pulp and paper mills

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78. The operator must keep samples at room temperature not exceeding 4 °C until they have been analyzed.
In the case of a sample taken to verify toxicity, the sample may be transported as such or, if transportation lasts more than 2 days, be kept in a dark place at a temperature between 1 °C and 8 °C.
O.C. 808-2007, s. 78.