While Semrock manufactures the most durable optical filters available, it is important to note that all optical components are delicate and should be handled with care. Always avoid or minimize direct contact with any optic. If you are not handling a Semrock filter, check with your filter vendor to ensure that the use of cleaning chemicals and solvents will not damage the filter. Because Semrock supplies only hard-coated filters, all of Semrock's filters (even dichroics) may be cleaned using the following recommended method. Watch this video to learn how to properly clean your filters.