Thermo Scientific™ 600 to 640 nm bandpass filter is a threaded, 50 mm diameter glass filter. This product is used for the addition of a red filter to one of two open positions in the myECL™iImager for detection (emission) wavelengths of common fluorescent protein stains, such as SYPRO® Red Protein Gel Stain, SYPRO® Ruby Protein Gel Stain and Deep Purple® Total Protein Stain.