395 PICASSO is an array of bubble detectors constructed to search for spin dependent interactions of weakly interacting massive particles. The bubble detectors are similar to those used in neutron dosimetry: superheated droplets of fluorocarbon (C4F10) are suspended in a polymerized gel, where a nucleus recoiling from the elastic scattering of a WIMP triggers the boiling of the superheated liquid. The explosive expansion of a droplet to a bubble will induce an acoustic wave in the gel which is picked up with piezoelectric sensors. The PICASSO collaboration has developed large volume bubble detectors of 4.5 litres. The performance of these detectors has been evaluated with several methods. The detectors are installed at SNOLAB, located at a depth of 2070 meters in the Creighton mine in Sudbury. The completed setup contains 32 detectors with a combined active mass of 2.6 kg. New exclusion limits on the WIMP cross section will be presented, based on data from the first of the large detectors. IDM2008 - Identification of Dark Matter 2008 Direct detection - experiments Anna Davour adavour@owl.phy.queensu.ca Anna Davour adavour@owl.phy.queensu.ca <MaKaC.conference.ContributionType object at 0xb4a96aec> Direct detection - experiments