The federal government no longer considers the presence of strontium to be a reliable indicator of corrosive Chinese drywall. According to the Consumer Products Safety Commission (CPSC), a high level of elemental sulfur appears to be a better indication that the defective wallboard is in a home.
The CPSC just recently revised its guidelines for identifying homes with defective Chinese drywall. The agency said the Federal Interagency Task Force that has been investigating the matter no longer believes strontium has a causative role in the problems associated with Chinese drywall, so it has been removed from the identification guidelines. More CPSC Updates Defective Chinese Drywall ID Guidelines
