Profile: Semrock, Inc. specializes in offering optical filters for biotech and analytical instrumentation. Our products include fluorescence filters, raman spectroscopy filters and laser analytical instrumentation filters. Laser & optical systems include tunable filters, bandpass filters, edge filters, notch filters, polarization filters and mirrors. MaxLine® laser-line filters are housed in a labeled, black-anodized aluminum ring with diameter 12.5 mm or 25 mm and thickness 3.5 mm. Our fluorescence filter sets include single band & multi band microscopy sets.