Meaning existing substances
What does existing substances mean? Here you find 2 meanings of the word existing substances. You can also add a definition of existing substances yourself
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existing substanceshazardous substances already approved for use in New Zealand prior to July 2001 (HSNO Act)
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existing substancesSince 1994, Canada has been screening all new chemical substances before allowing their use. However, many chemical substances were introduced prior to 1994. Many of these older, or "existing sub [..]
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