Dear colleagues,

I would appreciate any advice on how to properly photograph yellow-painted luminescent sand particles (in order to detect sand movement in the laboratory tank). I have Panasonic Lumix camera and I have done few small-scaled photos. Now I want to filter the background blue light from the UV-lamp. What kind of yellow filter do I need? Which one is better? Is it possible to by one in the regular shop or do I need to get some special equipment?

Thanks,

Andrei