The list of tested ingredients, their regulatory status and the target
concentrations in each mix is given in the Appendix in Table A.
Each ingredient was of food grade quality. A cigarette of identical
construction (cloves and humectants) but without the addition of
ingredients, served as control cigarette. Control and test cigarettes
were produced by PT Hanjaya Mandala Sampoerna Tbk., Surabaya,
Indonesia. The American-blended reference cigarette 2R4F was
used as internal reference cigarette. The reference cigarette 2R4F
was purchased from the University of Kentucky, Kentucky Tobacco
Research and Development Center.