CHEMICAL TESTING FORM Click on the image below and fill inÂ the Chemical Testing formÂ if you require any of the following tests: Colourfastness, Formaldehyde, Azo Dye, Phthalates, PCP, Dimethyl Fumarate, PH, Fibre Composition, Leather Verification, Chromium VI or Organotins Testing. MELT & ASSAY SUBMISSION FORM Click on the image below and fillÂ inÂ melt & assay submissionÂ form if you require your scrap melted down or your item assayed to see its content. …
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What causes tarnishing? Tarnishing of silver, which is typically a blue/ purple/black colour, is triggered by.... To read more about what causes tarnishing and what can be done to prevent it happening make sure to visit our meet the experts page on The Laboratory's website -http://www.theassayoffice.co.uk/meet_the_experts/tarnishing_labexpert.html
Packaging for official gifts was also analysed to ensure that every piece met the strict âlow carbonâ LOCOG policy of the Games, with no traceable toxic elements or compounds.
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