As we see it these are as below:
PROS: All that is left generally is asbestiform material/fibres. By removing all organic interference fibres (which can effect asbestos characterisation). This can be helpful when the sample renders a large concentration of organic and synthetic fibres.
CONS: The preparation of Ghost Wipes is done in a muffle furnace at 400°C (±30°C ). Because chrysotile can denature at temperatures from around 450°C, it is essential that there is no temperature ‘creep’ or ‘impulse’. If this occurs there is a change that the laboratory could deem asbestos fibres as non-asbestos. Therefore it is critical that the laboratory furnace is calibrated to reduce this from occurring. In addition, some consultants believe that amphiboles may not be reliably captured by ‘wet-wipes’. Amphiboles tend to be more hydrophobic than serpentine fibres, such as chrysotile.Below are some comparative images of surface samples via tape samples versus Ghost Wipes.