Envirochem has had two separate enquiries about testing the core material in aluminium composite panels. Two sheets of aluminium sandwich a non-metal core; these panels are often used for cladding on the outside of buildings. In order to determine whether the core was polyethylene or not, we ran a comparison scan with a known sample of polyethylene on our GC-MS (gas chromatography linked mass spectrometry). This allowed us to look for marker peaks like ethane, which is a good indicator for polyethylene.
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