Kapton Window Film, 0.3 mil (8 m) Thick, 2 7/8 in Wide; 50 ft

Thin window film for XRF liquid sample cups|Heat resistant up to 300C (572F) Chemically imperious to almost anything Compatible with X-Cell sample cups 0.3 mil (8 m) thickness|Box has a serrated edge for tearing thin window film to desired length|Supplied as continuous roll 2 7/8 in (73 mm) wide, 50 ft (15 m) long|Spex SamplePrep XRF window film serves as the sample window over our X-Cell sample cups, allowing for uniform transmission of x-rays while effectively containing the liquid sample. Kapton polyimide film is chemically imperious to almost anything except strong alkali solutions. It is often considered the closest thing to a bombproof XRF window film due to its incredible strength and heat resistance to over 300C (572 F). The phosphate-based surface coating improves its handling characteristics.