Cargille liquids of known refractive indices are used as immersion media. There are a number of other tests for examining samples for asbestos in bulk samples. However for routine purposes, the above examinations are usually sufficient to identify positively whether asbestos is present and its type. Voelcker Science has carried out numerous surveys of houses, flats, offices, factories, public buildings and ships over the years, and examines clients' bulk samples in-house on a regular basis. Please contact us if you would like to discuss a project or for some advice.
Initial consultations are free of charge.