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Understanding toxic agents

2022-07-14View Original

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This post was last edited by Seawater sky ice on 2022-7-14 at 14:52. How does everyone understand this sentence? What is the relationship with the regulations of HG20660?
Reply #22022-07-14
In the new version of 20660, the classification method seems to have changed; this classification method is no longer used.
Reply #32022-07-18
If I don’t understand what to ask, should I ask? Is there anything inconsistent?
Reply #42022-07-22
I’m just asking everyone what their understanding of this passage is
Reply #52022-07-25
I’m not sure what you’d like to know; this is a way of determining the level of toxicity based on the maximum allowable concentration, and it mainly applies to mixtures or substances for which no data is available.
Reply #62022-07-29
Teacher Yan Changling explained it quite clearly: https://mp.wei*n.qq.com/s/_pmuut3F1gCdsZe_B2bW7A

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