The manufacturer of the RCS High Flow Microbial Airborne Sampler is Biotest. Biotest Hycon RCS High Flow Microbial Airborne Sampler with high resolution display for easier operation. Optional: Battery charger and extra batteries. The Hycon RCS High Flow is the most secure and effective air sampling system for environmental monitoring. The Biotest Hycon RCS High Flow is a high precision air sampler great for detecting microbial substances in the air. This model is light weight; battery operated, and uses a centrifugal force that impacts microbes onto an agar strip providing you an efficient air sample.