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Safety of Dense White for food surfaces

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Safety of Dense White for food surfaces

Postby crocglass » Sun Feb 07, 2010 12:19 am

BE,

Since discovering Karl Harron's work I have been having an iteresting time combining Dense White base with different combinations of FV suface designs resulting in some quite pleasing pieces for their level and suitable as gifts for friends. My question is a matter of safety presenting the sushi bowl sets as safe since none are capped with clear and I feel doing so would change their character. Is anyone creating functional pieces with these combinations and using for food surfaces?

Croc :ugeek:
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Re: Safety of Dense White for food surfaces

Postby Stephen Richard » Sun Feb 07, 2010 12:36 am

Crock (whoever you may actually be),

I have quite strong opinions on this lead subject.

Look up this:
http://www.bullseyeglass.com/education/torchtips/

You will see there is no lead in French Vanilla.
Anyway if there was, it is minute. It would take very acid food a very long time to leach any significant amounts of lead, in fact the food would be rotten long before any harm could come to anyone.

Of course, this is my opinion, not scientific fact.

Steve
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Re: Safety of Dense White for food surfaces

Postby marykaynitchie » Sun Feb 07, 2010 3:27 pm

Hi Croc,

Dense White (000313) contains lead.
Opaque White (000013) does not contain lead.

Below, from our FAQ page, http://www.bullseyeglass.com/products/faq/, is our general advice regarding concern about using dishes made of Bullseye glass for serving food.

Mary Kay Nitchie
Bullseye Glass Co.

Is Bullseye glass food safe? Does it contain lead or cadmium?

Below we have listed the Bullseye glasses that contain more than 1.0% lead or more than 0.5% cadmium. If you are using any of these styles for food-bearing objects, we recommend capping them with our clear glass. In our tests we have found that clear-capping results in minimal lead and cadmium leaching, well below FDA limits. In our tests we have also found that transparent glasses leach lead/cadmium at levels below FDA limits, and much less than opalescent lead/cadmium-bearing glasses; so you may be able to use transparent lead/cadmium-bearing glasses without clear-capping. Our testing, however, does not cover all glass styles or firing conditions, and it cannot be taken as a guarantee of food safety when using these glasses. If you are selling food-bearing objects, it is your responsibility to have them tested, since lead/cadmium leaching can be affected by the specific processes to which the glass is subjected. A heavily textured surface, for example, has more total surface area and, therefore, more area from which lead/cadmium may be leached. A local chemistry lab should be able to perform the necessary test for you, according to ASTM C738-94(2006) Standard Test Method for Lead and Cadmium Extracted from Glazed Ceramic Surfaces, for a relatively low fee of around $30 to $70 dollars per sample.

The following glasses contain more than 1.0% lead: 000243, 000301, 000303, 000304, 000305, 000313, 000334, 001205, 001215, 001234, 001311, 001305, 001332, 001334, 001823, 001824, and 001831.
The following glasses contain more than 0.5% cadmium: 000220, 000224, 000225, 000227, 000309, 000310, 000320, 000325, 000329, 000330, 000337, 001321, 001322, 001325, 001330, and 003203.

Mary Kay Nitchie
Bullseye Glass Co.

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