s 1DA Dilution to reduce concentration of radioactivity: Northern Ireland
For the purposes of section 1B, 1C and 1D, a substance or article is to be treated as having a concentration of radioactivity which exceeds the value referred to in section 1B(2), 1C(c)(i) or 1D(a), if a person has deliberately diluted the substance or article with the intention of ensuring that its concentration of radioactivity does not exceed that value.