The Gilian?? 5000 Sensidyne???s newest design that is a 750 to 5,000 cc (Check with Ron) per minute personal air sampling pump that has the highest back pressure capability of the Gilian range and is easy to use. Making the best even better, the Gilian 5000 is now adds a programming feature that adds increased functionality for Industrial Hygienists and other safety professionals. This new feature adds a four stage program with repeat cycling, permits scheduled sampling or intermittent duty cycles and programmable delayed start.