# Commission Regulation (EU) 2017/644 of 5 April 2017 laying down methods of sampling and analysis for the control of levels of dioxins, dioxin-like PCBs and non-dioxin-like PCBs in certain foodstuffs and repealing Regulation (EU) No 589/2014 (Text with EEA relevance), Division 5.1: Low working range and limits of quantification

Extent: E+W+S+N.I.

For PCDD/Fs, detectable quantities have to be in the upper femtogram (10– 15 g) range because of extreme toxicity of some of these compounds. For most PCB congeners limit of quantification in the nanogram (10– 9 g) range is already sufficient. However, for the measurement of the more toxic dioxin-like PCB congeners (in particular non-ortho-substituted congeners) the lower end of the working range must reach the low picogram (10– 12 g) levels.

---
Source: https://www.legislation.gov.uk/eur/2017/644/annex/III/division/5/division/5.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-644/annex-III/division-5/division-5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.