A laboratory experiment was set-up at FOI in Linköping with the purpose of measuring fluorescence and backscattering radiation with biological stand-off detection systems under well controlled circumstances. Staff from FOI and FFI participated in the experiment during the time period 2008-03-31--04-04. Bio-agent simulant particles and interferents were released in a shower cabin allowing for a well defined particle concentration along a 2 metre test path. Holes with so called air curtains were used instead of windows to allow for laser excitation and detection. The particle concentration was continuously monitored using two particle counters. Three pulsed laser systems with output energy on the order of 10 mJ and with a wavelength of 266 nm, 355 nm and 1570 nm were utilized. FOI was using a fluorescence detection system based on a 5 cm receiver placed about 7 m away from the shower cabin and acquired data with excitation at both 266 nm and 355 nm. FFI was using a 355 fluorescence lidar from a stand-off position about 150 m away from the shower cabin and acquired data mainly with excitation at 355 nm. An IR-laser range finder system was also used with the purpose of measuring elastic backscattering at 1570 nm but useful and reliable data was not obtained due to practical constraints. On the contrary both fluorescence spectra and elastic backscattering signals of high quality were acquired with the UV-systems.