Sorry fopr responding to the whole list but maybe others might be interested.
A journal citation for SCIRA testing is JAOAC,Vol 65,No 3, 1982 by Donner and
Bills (JAOAC=Journal of the Assn of Official Analytical Chemists) Im not
familiar with this testing myself so I cant comment on what the units are.
If you have any more specific questions our lab expert here at FDA in Bothell
WA is Janet Burke ([log in to unmask]). Mihaly