P235/002/012 - Emission Filter Holder
This two position 1/2" manual filter changer fits between the photomultiplier P240/xxx/001, and connector box (P225/0x0/011 or P226/0xx/011) allowing direct filtering of the light reaching the photomultiplier tube. If different filters are not being used then one of the positions can be blanked off, thus acting as a shutter. Three position carriers are available on request.
