Filter paper samples which are often used for filter residue analysis and asbestos analysis must be mounted firmly and flat into the SEM system for correct analysis. As filter paper is a delicate sample material, mounting these samples without the use of an insert can lead to folding and damaged samples. The use of traditional, often highly sticky, carbon tape prevents the sample to be re-used for future analysis. The Thermo Scientifc™ filter insert for the Thermo Scientifc™ Phenom™ XL is available in two models which support 47 mm (1.85 inch) and 25 mm (1 inch) filters, which means the Phenom XL can accommodate the most common filter paper sizes.