The modular concept of the ERWEKA Dissolution Systems offer a wide range of possibilities for automation under very simple and cost-saving conditions not known until today.
Years of experience in automating dissolution-processes and knowledge of the different needs of users has enabled us to develop a new series of dissolution-systems, that will satisfy almost all requirements and will support your future changing requests. Now every system can be modified locally by adding one or more modules to meet your requirements.
For non complex applications where only direct analysis is required, the Online-Dissolution-System is recommended. The sample is taken with the 8-channel Peristaltic Pump (optionally Syringe Pump) from the test vessel and injected to the flow-through cells of the spectralphotometer. After analysis the sample is transferred back to the test vessel. The system is equipped with Teflon tubes.
A flexible virtual dilution may be created by using flow-through cells with different path lengths.
ERWEKA Dissolution system software, type DSS can communicate with UV-VIS spectral analysers from Perkin Elmer. Also ERWEKA dissolution testers can communicate via Perkin Elmer and Agilent software.
The basic module of the dissolution system is, beside the dissolution tester, the ERWEKA 8-channel Persistaltic Pump IPC 8 (picture). On request the Dissolution Online System is also available with 8-channel Syringe Pump SP 840.
All tubing on the sampling station on the dissolution tester are made of high quality stainless steel. Optional Titanium tubing is available for very aggressive media.
Filtration of the samples is performed on ERWEKA systems generally in the test vessels. This will ensure contrary to other systems, that no particles have access to the sample tubing and system tubing. All active substances are kept in the test vessel for release testing. Additional hydrodynamic activity in the media caused by the filters is almost eliminated as the sample tubes and filters are moved into the medium only for a very short period, to take the samples only.
Should filtration better than 1µm be required, the ERWEKA systems offer a double filtering feature, conceived by one filter directly on the sampling tube and an additional exchangeable syringe paper filter inline on the tubing.
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