Glen Spectra provides a free filter selection and advice service for flow cytometrists. As the number of lasers and detection channels increases, the task of filter selection becomes more complex, according to the company. The company’s flow cytometry filters cover UV to IR emission, providing selectivity for the fluorophore and preventing crosstalk. Featuring high transmission and blocking to minimize light losses, they are available in sizes to fit a variety of research and clinical instruments. Custom design filters are available. The filters complement numerous dye-specific fluorescence filter sets for single- and multilabel microscopy applications.