# The Chemical Analysis of Water Status (Technical Specifications) Regulations (Northern Ireland) 2011, Regulation 5: Minimum performance criteria for methods of analysis

Extent: N.I.

The Department shall ensure that—
(a) the minimum performance criteria for all methods of analysis applied are based on uncertainty of measurement of 50% or below (k = 2) estimated at the level of relevant environmental quality standards and a limit of quantification equal or below a value of 30% of the relevant environmental quality standards; and
(b) in the absence of relevant environmental quality standard for a given parameter, or in the absence of a method of analysis meeting the minimum performance criteria set out in paragraph (a), that monitoring is carried out using best available techniques not entailing excessive costs.

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Source: https://www.legislation.gov.uk/nisr/2011/238/regulation/5 (the official version)
Page: https://openlegislation.uk/chemical-analysis-of-water-status-technical-specifications-regulations-northern-ireland-2011/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.