An Olympus Innov-X Delta Handheld XRF Analyzer tests glassware decorated with a Ronald McDonald character for cadmium, lead and other toxic elements in Los Angeles in this Sept. 9 photo. The device is used for the analysis of environmental, geological, biological, industrial and other samples.

Los Angeles ? Drinking glasses depicting comic book and movie characters such as Superman, Wonder Woman and the Tin Man from “The Wizard of Oz” exceed federal limits for lead in children’s products by up to 1,000 times, according to laboratory testing commissioned by The Associated Press.

The decorative enamel on the superhero and Oz sets — made in China and purchased at a Warner Brothers Studios store in Burbank — contained between 16 percent and 30.2 percent lead. The federal limit on children’s products is 0.03 percent.

The same glasses also contained relatively high levels of the even-more-dangerous cadmium, though there are no federal limits on that toxic metal in design surfaces.

In separate testing to recreate regular handling, other glasses shed small but notable amounts of lead or cadmium from their decorations. Federal regulators have worried that toxic metals rubbing onto children’s hands can get into their mouths. Among the brands on those glasses: Coca-Cola, Walt Disney, Burger King and McDonald’s.

The testing was part of AP’s ongoing investigation into dangerous metals in children’s products and was conducted in response to a recall by McDonald’s of 12 million glasses this summer because cadmium escaped from designs depicting four characters in the latest “Shrek” movie.

The New Jersey manufacturer of those glasses said that the products were made according to standard industry practices, which includes the routine use of cadmium to create red and similar colors.

To assess potential problems with glass collectibles beyond the “Shrek” set, AP bought and analyzed new glasses off the shelf, and old ones from online auctions, thrift shops and a flea market. The buys were random.

The fact it was so easy to find glasses that appeal to kids and appear to violate the federal lead law suggests that contamination in glassware is wider than one McDonald’s promotion.

AP’s original investigation in January revealed some Chinese manufacturers were substituting cadmium for banned lead in children’s jewelry; that finding eventually led to the McDonald’s-Shrek recall; now, because of the new testing primarily for cadmium in other glassware, lead is back in the spotlight as well.