The Natural Mineral Water, Spring Water and Bottled Drinking Water Regulations (Northern Ireland) 2015 No. 365

SCHEDULE 11 N.I. Sampling and analysis for indicative dose in water bottled and labelled as “spring water” and bottled drinking water

PART 1 N.I. General

4.  If the following formula is satisfied, the indicative dose is considered to be less than the parametric value of 0.1 mSv and no further investigation is required— N.I.

where

Ci(obs) = observed concentration radionuclide i

Ci(der) = derived concentration of radionuclide i

n = number of radionuclides detected