Midwest Optical Systems LP285-43 Forge 4 Light Red Bandpass M25

4 Light Red Bandpass M25

Midwest Optical Systems BP660-46 Dark Red Bandpass M46 Bandpass Filter

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Midwest Optical Systems LP645-95 Dark Red Longpass M95 Longpass Filters

Midwest Optical Systems LP285-43 Forge 4 Light Red Bandpass M25Midwest Optical Systems LP285 43 High Transmission Heat Resistant A R Protective Window M43 Protective Filters Often referred to as a sharp cut filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths. Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio.