The current acceptable lead limits are:
*90PPM by weight for any surface coatings including but not limited to paints, sealant, inks, screen printing media, and stains (basical most liquids that dry to a solid)
*300PPM by weight for all other materials
Keep in mind there is currently a vote going on by the CPSIA committee as to lowering the acceptable limits effective Aug 14th 2011
Read more from Table A: Compliance and Testing Timetable at
http://www.cpsc.gov/about/cpsia/smbus/manufacturers.html#q8