Midwest Optical Systems LP285-55 Forge Midwest Optical Systems LP550-13

Midwest Optical Systems LP550-13

Midwest Optical Systems LP645-58 Dark Red Longpass M58 Longpass Filters

5 Blue Bandpass M25

5 Narrow Dark Red Bandpass M22

Midwest Optical Systems PA371-R380x310 Ultra-High Contrast Oleo Coated Acrylic Linear Pol

Midwest Optical Systems LP285-55 Forge Midwest Optical Systems LP550-13Midwest Optical Systems LP285 55 High Transmission Heat Resistant A R Protective Window M55 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.