For measurements under defined temperatures, the temperature control block ED-101US/T can be mounted on the optical unit ED-101US/MD. The block consists of an inner flow-trough metal part which is slightly pressed on the sample cuvette by a spring mechanism, and an external foam part for temperature insulation. Temperature control is achieved by an external flow-through water bath (not included) connected to the temperature block.
The US-T unit consists of a heat-transfer head with a cooling/heating Peltier element, and a separate power-and-control unit. The heat-transfer head is mounted on top of a Walz optical unit (ED-101US-type) so that the dip of the rod is in touch with the suspension investigated. The achievable temperature spread in suspensions is about 30 K; absolute temperatures depend on ambient temperature.
Download the manual for detailed information.
Exact light measurements in suspensions (but also in air) can be carried out by the spherical micro quantum sensor US-SQS/WB. The sensor has a 3.7 mm diameter sphere as the entrance optics. When the sensor is connected to the control unit MCP-C, data will be acquired and processed by the PamWin-3 software.
Settling of particles is prevented by using a miniature magnetic stirrer (US-MS). The stirrer is mounted directly beneath the sample cuvette. A rotating magnetic field created by the stirrer tip moves a miniature magnetic stir bar in the cuvette. The stirrer is connected to the MULTI-COLOR-PAM control unit (MCP-C). Stirring can be switched on and off by the PamWin-3 software.