The Model M1000 peristaltic pump features a patented quick-change tube loading system. Tube cartridges for the M1000 can be easily changed by unclipping them from the pump head and replacing them with new cartridges. An additional advantage to this replaceable cartridge system is the use of dovetail-sectioned tubing ultrasonically welded to the tube cartridge, which eliminates tube creep. M1000 tube cartridges are available in autoclavable black polysulfone, or clear K-resin for sterilizing by gamma or ethylene oxide. Clark-Pump Solutions, 55 Green St., Clinton, MA 01510. Tel. (800-253-2497; fax (978) 368-3633;