31 MM Dark Field / Oblique Microscope Filter Set | eBay
Amazon.com: MAXLAPTER Microscope Kit for Kids 8-12 with Prepared Slides, 100-1000X Professional Compound Microscope for Kids Students with Mechanical Stage, Optical Glass Lenses, 10 Slides, Filter, Phone Adapter : Toys & Games
Fluorescence Microscopy - Fluorescence Filters | Olympus LS
Fluorophores and Optical Filters for Fluorescence Microscopy