Yep..at least, I think so..
The sample is in a cuvette..your excite it with UV..shine the UV through the sample onto a detector..the detector samples the interference bands, passes the info on to the electronics..then to the read out. Requires a liquid sample, since solids are UV opaque.
The other way..the sample is in a cuvette, shine the UV on it, excite it, get decay photons reflected back to a detector, detect them and pass them along to the electronics..then to the read out.
The second way..you can check a pill if you crush it..
The first way you really cannot check a pill unless you liquify it and clarify the liquid.
Now I hope in my non tech language, you see what my previous Q is, or if I am way the heck off..tell me...LOL!!