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The Sur-Fit Natura Colostomy Pouch features a plastic coupling ring that allows the pouch and skin barrier to snap together for audible security, and only the Sur-Fit Natura ostomy system is available with ConvaTec Moldable Technology skin barriers; these barriers hug the individual contours of your stoma to allow for a secure, personalized fit without the need for scissors. *Two-piece Systems Do NOT Come with a Barrier

Double Convex Lens, 300mm Focal Length, 1.5" (38mm) Diameter - Eisco Labs Optically True, Double Convex Lens 38mm Diameter, 300mm Focal Length High quality, optically true lens. Made of highly polished, quality glass. Spherical with ground edges. Designed for educational purpose and science classroom demonstrations in optics and light physics. Lens measures 1.5" (38mm) in diameter, and has a converging focal length of 300mm. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments. Product Details BrandEiscoSize300mm Focal LengthManufacturerEiscoProduct TypeScience Classroom Optics KitsMpnPH0534FCV DOUBLE CONVEX || Highly polished, double convex lensSPHERICAL || Lens measures 1.5" (38mm) in diameter300MM FOCAL LENGTH || Converging lens with a 300mm focal lengthOPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with ground edgesGREAT FOR PHYSICS CLASSROOMS || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction Check out my other items. -Powered by

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