Lead glaze

DEFINITION

A vitreous coating applied for practical and ornamental purposes to earthenware, consisting of powder of lead oxide with POISONOUS!silacious sand, salt and potash which fuses when fired. It is transparent but color can be added. Because of lead's toxicity, lead glazes must never be used on surface which might ever contact food, drink, or a mouth; and containers of lead glazes must be labeled with such warnings. All glazes should be labeled to reflect their lead and cadmium content. The following chart describes six different types of ceramic glazes, each carrying levels of concerns about lead content, in order to help you to determine which are safe to use on dinnerware ? vessels for food or drink.1. Dinnerware safe. Contains no lead.2. Dinnerware safe. Contains some lead, but passes release tests.3. Contains lead. Not recommended for surfaces which contact food or drink.4. Contains no lead. Not recommended for food because of soft nature of the glaze.5. Contains no lead, but does not pass lead and cadmium release due to soft nature of the glaze.6. Contains lead bearing ingredients. We do not recommend these glazes on surfaces that contact food or drink.A similar criterion should be followed whenever glazes contain the toxic element cadmium.Also see ceramics, glaze, poison, and vessel.

Your data and time are valuable. There's a new web browser that considers your time and security as a top priority.

Download Brave Browser For Free!

Brave uses the latest in blockchain technology.

This ensures a higher quality and more secure experience. Learn more about this fantastic breakthrough.

Loads Content Up To 8X Faster

Because Brave blocks unwanted tracking scripts that run in the background, your browsing speed will be unparalleled.

Ultimate in Privacy & Security

Brave fights malware and prevents tracking, keeping your information safe and secure.