DISRAD

A:Yes, DISRAD dispersion tools adopt a modular design, allowing each component to be purchased separately, especially the stator and rotor. There is no need to replace the entire tool, saving costs.

A:The replacement interval for the PTFE bushing depends on the frequency of use. Once wear is found (typically when the inner diameter becomes larger), it must be replaced immediately and cannot continue to be used, otherwise the stator and rotor in the dispersion tools may be damaged. Alternatively, copper/ tungsten carbide metal bushings can be selected for the Series-C, which are maintenance free.

A:Before starting operation, the sample liquid should at least cover the bottom circulation hole of the tool. During operation, avoid direct contact between the bottom circulation hole and air, while also preventing the upper overflow port from being completely submerged.

A:A serrated dispersion tool with a diameter of Ø14 mm is recommended. The serrated stator and two tooth rotor provide stronger shearing force. Container size, liquid height, and other factors should also be considered.

A:It is normal to have a slot (crack) in the PTFE bushing; it is not a defect. As part of the bearing system, the flowing medium enters through this slot into the space between the shaft (rotating shaft) and the PTFE bushing, generating high speed self lubrication, reducing frictional resistance and providing cooling.

A:No. Typically, particle size will not further decrease after continuous processing beyond 15 minutes. Only heat (due to friction) is transferred to the medium, causing the sample temperature to rise continuously.

A:This is caused by friction and heat generation when the PTFE bushing runs dry during high speed operation. Pay attention to the following:

A:Yes. DISRAD dispersion tools are made of AISI 316L stainless steel and special PTFE. The tools support chemical sterilization, moist heat sterilization (autoclaving), and dry heat sterilization. (Refer to the operation manual for details.)