In Test-Tech's Analytical and Microscopy Department we can deal with technical issues occurring at various stages of production right up to the finished product. We have in-depth knowledge of paper industry chemicals and are able to offer advice on possible sources of contamination, and, if required, can provide independent reports to verify the findings.
A client had a problem with product contamination and required to know the chemical nature of the contamination and where exactly it was located.
We combined optical and electron microscopy (SEM) along with the infra-red microscopy and elemental analysis (EDX) to answer these questions.
Both the optical and electron microscopy proved the spots were located on top of the surface of the paper. They were a mixture of various chemical compounds not related to client's production, which suggested the client had received contaminated raw materials.