|Monthly Tech-Tip |
The SMGs (specific migration limits) on lead and cadmium are being reduced and requirements added for compliance on other metals. Testing must be in accordance with European Standards: EN 1388-1 and EN 1388-2. The migration of elements into a food simulant (4% acetic acid) is measured, by accredited methods according to EN ISO/IEC 17025:2005, using FAAS (flame atomic absorption spectrometry). It is a rapid and generally robust interference-free technique having simple external standardization with matrix-matched solutions. Exposure assessment is performed taking into account actual reference doses introduced by the European Food Safety Authority (EFSA) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA). How can one deal with this? Check the limit recipe, leaching and toxicity topics. For maximum assurance, develop your own base recipe and variegate that.
A paper from the National Institute of Public Health-National Institute of Hygiene, Department of Food Safety, Warsaw, Poland.
Flame Atomic Absorption Spectrometer (Flame AA)
Flame atomic absorption is a very common technique for detecting metals and metalloids in environmental samples. It is very reliable and simple to use.
Food Contact Science and Testing: What Are OML, SML and QM?
The migration of a hazardous substance into the food stuff is the main safety concern for food contact materials (FCMs). The compliance of FCMs is often verified by migration testing.
Intertek Migration Testing for Food Contact Materials (FCMs)
Migration is the transfer of chemical substances from FCMs into food. Several food contact legislative frameworks worldwide have set out requirements on testing the migration of substances.
Ceramic glazes can leach heavy metals into food and drink. This subject is not complex, there are many things anyone can do to deal with this issue
This term refers to critical thinking ability that potters and technicians can develop to recognize recipes having obvious issues and merit, simply by seeing the materials and percentages.
Concentrate on One Good Glaze
It is better to understand and have control of one good base glaze than be at the mercy of dozens of imported recipes that do not work. There is a lot more to being a good glaze than fired appearance.