To mathematically predict human exposure to consumer products, RIVM has developed a software model called ConsExpo. The most recent ConsExpo is version 4.1.
RIVM is the National Institute for Public Health and the Environment of The Netherlands.
Links:
[1] http://www.rivm.nl/en/Images/ConsExpo 4.1 setup_tcm13-26780.zip# class=
[2] http://www.rivm.nl/en/healthanddisease/productsafety/ConsExpo.jsp