Zipper and fastener maker YKK has lowered the lead content in most of its products so that they comply with the standards required under the Consumer Product Safety Improvement Act (CPSIA).

The company says most products now have no more than 90 ppm (parts per million) lead in either the surface coating or the substrate - which means they also beat new CPSIA lead limits set to be introduced in August 2011.

Since it became law in 2008, the CPSIA has regulated the amount of lead content permitted in products for children aged 12 years and under.

The current CPSIA standard for lead in the substrate of a children's product is 300 ppm, but from August 2011 the limit for lead in the substrate of a children's product will drop further to 100 ppm.