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Please note: HazChem Logistics Management Co., Ltd. (HazChem) does not take responsibility for the content of these definitions, nor does HazChem endorse these as official definitions.  The definitions of the terms are given for useful reference only.  

Remarks: These definitions are obtained from Globally Harmonized System of Classification and Labelling of Chemicals (GHS) (Third revised edition) by United Nations

 

  NOEC (no observed effect concentration)


NOEC (no observed effect concentration) means the test concentration immediately below the lowest tested
concentration with statistically significant adverse effect. The NOEC has no statistically significant adverse
effect compared to the control.

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