Rapidly Degradable
Rapidly Degradable : In relation to a substance in water, means that: (a) 28 days after a solution containing the substance is inoculated with micro-organisms, there is at least: (i) a 70% reduction in dissolved organic carbon in the solution; or (ii) a 60% depletion of oxygen in the solution, when compared with the maximum depletion of oxygen that would occur if the substance were completely degraded; or (iii) a 60% generation of carbon dioxide in the solution, when compared with the maximum generation of carbon dioxide that would occur if the substance were completely degraded; or (b) if only COD and BOD5 data is available, the ratio of BOD5 to COD is greater than or equal to 0.5:1 or (c) at least 70% of the substance can be degraded biotically or abiotically, in the aquatic environment within 28 days
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