The Sarstedt HCTS2000 MK2 accessions and sorts closed primary sample tubes rapidly and accurately to seven user-defined target bins. Optional extension modules of five bins each can be added for up to 22 total targets (primary bins plus three modules). The instrument can process up to 2000 tubes per hour and tubes can be loaded and unloaded with minimal interruption. Users can select 10 different sets of sorting rules, and the HCTS2000 MK2 can sort with or without a LIS connection. It is compatible with a broad range of tubes, regardless of manufacturer.