PSL Rheotek Auto Tubes are suitable for use with PSL Rheotek Automated Viscometers and automatic viscometer systems. Models incude RUV, RPV-1, RPV-2, AutoKV & JETVISC. Designed specially for the PSL Rheotek instruments, they fit into the measuring head unit of a PSL Rheotek Viscometer system. In this categorie there are the following viscometers available: AKV Ubbelohde capillary tubes; RPVm Ubbelohde Viscometers; JETVISC AKV Tubes; Cannon-Fenske Routine Auto; ISO 5351 Tubes (SCAN).