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          • Startbild DT Offline System Product Page



          Dissolution Offline System

          The ERWEKA Dissolution Offline System is the ideal semi-automatic solution for dissolution testing with automated sampling and subsequent sample storage for later analysis. The system is controlled by a DT 820 series dissolution tester with advanced intelligence.

          The DT 820 series equipped with i-Version comes with integrated intelligence for controlling the offline sampling system, which consists of an auto sampling station ASS-8 connected to the DT, a pump (peristaltic or piston) and the sample collector of the FRL series for storing the samples into glass tubes or sealed HPLC vials.

          This configuration does not require an additional PC or any software and therefore saves space, money and last but not least software validation work.


          Advanced dissolution system with a broad feature set.

          100 % USP/EP/JP compliant

          100 % USP/EP/JP compliant

          As all ERWEKA products, the Dissolution Offline Systems are also 100 % USP/EP/JP compliant.

          Easy control

          Easy control of the complete system

          Alpha-numeric touch sensitive keypad with illuminated full-graphic 5.7" dot matrix display.

          USP 1, 2, 5 and 6

          USP methods 1, 2, 5 and 6

          Standardised shaft design allows using different attachments for all kinds of USP methods.

          Easy cleaning

          Simple cleaning

          Simple cleaning of the water bath and the set-up area.

          External heater

          External heater

          External flow-through heater reduces the influence of external vibrations and ensures a constant temperature.

          Sample Collector FRL 624/724/824

          Sample Collector FRL 6/7/854

          With a small footprint for optimized laboratory space and 6, 7 or 8 channels.


          Proven ERWEKA quality throughout the entire system.

          • DT 820 Series

            Dissolution Tester DT 820 Series with i-Version

            Heart of the Dissolution Offline System.

            As the main controlling device, the dissolution tester of the DT 820 series is central to the ERWEKA Dissolution Offline System. By default the Offline System is equipped with a DT 820 in low-head mode. Optionally, the system can also be operated in high-head mode.

          • ASS-8

            Automated sampling station ASS-8

            Precise sampling according to the USP sampling points.

            The automated sampling station ASS-8 is an add-on module to the DT 820 series, responsible for taking samples according to the USP sampling points right from the vessel itself. With the help of the connected pump, the media is then pumped to the FRL sample collector, which stores the samples in glass tubes or HPLC vials for later analysis.

          • IPC 8 Pump

            Peristaltic pump IPC 8

            Efficient and versatile pump for ERWEKA dissolution systems.

            The peristaltic pump IPC 8 is the basic pump in the ERWEKA dissolution systems and transports the test medium via eight channels to the compact sample collector of the FRL 854 series.

          • FRL 854 Series

            Sample collector FRL 854 Series

            Efficient sample collection for later analysis.

            The sample collector FRL 6/7/854 offers a space-saving footprint and can store up to 26 samples per vessel. Its advanced design allows simple cleaning below the easily removable vessel rack.

          • DT Offline System Variants

            Dissolution Offline System Variants

            Specify your Offline System tailored to your needs.

            Space-saving solutions and perfectly suited for testing of smaller tablet batches:

            • Dissolution Offline System with DT 820 series, PVP 820 series and FRL 854 series
            • Dissolution Offline System with DT 820 series, IPC 8 and FRL 854 series

            Perfectly suited for testing of larger quantities:

            • Dissolution Offline System with DT 1610 series, PVP 1420 series and FRL 854/2 series
            • Dissolution Offline System with DT 1610 series, IPC 16 and FRL 854/2 series

          FRL 854 Series

          FRL 854 Series

          ERWEKAs compact sample collector

          The FRL 6/7/854 combines a space-saving footprint with all the familiar functions of the large FRL generation. The legs have been moved inwards, so that the shortened FRL can be placed crossways on the laboratory table. It can be tested with 6, 7 or 8 channels and, depending on the application, equipped with different racks for different test tubes or HPLC vials.

          More information



          Configured to your needs.

          • Rack (26 x 8) with glass tubes of 10 ml volume
          • Rack (18 x 8) with glass tubes of 25 ml volume
          • Rack (26 x 8) for HPLC vials, 1.5 ml volume
          • Rack (26 x 8) for HPLC vials, 4.0 ml volume
          • IQ/OQ/PV documents
          • Q/OQ/PV service
          • Maintenance contracts


          All the facts.

          • ERWEKA DT 820 Series with touch sensitive keys and LC display for full control of the Offline System
          • Practically maintenance-free piston pump PVP 820
          • Sample collector FRL 854 (of up to 26 sampling intervals) with movable tray for easy exchange of vessel racks
          • Different sampling containers available – 26 x 8 glass tubes of 12 ml capacity, 16 x 8 glass tubes of 25 ml capacity or 26 x 8 HPLC vials of 1.2 ml or 4.0 ml capacity
          • Optional dilution possible
          • Fluoropolymer tubing
          • Integrated cleaning routine of the FRL 6/7/854
          • System control by DT 820 i-version


          Get an impression of the ERWEKA Dissolution Offline System.


          Our Brochure.

          DT Offline System Brochure

          DT Offline System Brochure

          Download our brochure for more in-depth information.