Post #230292 by Hakalugi on Wed, May 3, 2006 1:36 PM

Are these mugs for display only?

I stumbled across the following statement in regards to food grade glaze. Perhaps you can ease my concerns.

http://www.7ceramic.com/catalogs/web/CS04_05E.pdf

Not all ceramic glazes contain lead compounds and extremely few contain cadmium. Whether or not such glazes could be used on food containers is listed on their individual labels. Well formulated glazes will result in a stable surface which will not dissolve in contact with foods. Most glazes are subjected to lead release testing by an independent , approved laboratory to establish the dinnerware status of each glaze by passing the guidelines established by the FDA for dinnerware glazes. However, in view of the new reduced guidelines established by the FDA in November 1991 and due to many variables that can affect lead leachability in finished ware (exact firing temperature, contamination from other ware being fired in the kiln, etc.) It is recommended that the pro-ducer of any for sale dinnerware have it tested for leachable lead by an approved laboratory to determine whether or not it meets FDA guidelines in its own category BEFORE IT IS PUT ON THE MARKET.Some glazes are not suitable for use on food contact services. Glazes that contain a crackle materials and textured surfaces are difficult to clean within the cracks and can be soft and corroded if used frequently.It is impossible for any glaze manufacturer to guarantee the finished properties of its products since application and firing are critical factors over which the supplier has no control. Tableware producers are respon-sible for complying with FDA guidelines for lead release. Any statements concerning dinnerware safety must be confirmed by the producer of the products through lead release testing by an approved laboratory.