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Dissolution Online System

The ERWEKA dissolution online systems are the perfect, semi-automatic solutions for dissolution testing with automated UV/VIS online analyses.

The DT 950 with the integrated, automated ASS-9 sampling station transports freshly sampled media directly to the UV/VIS analysis device (several brands available). There, the samples can be measured and the results can then be stored within our advanced Disso.NET dissolution software.

ERWEKA offers different types of UV/VIS analysis devices, such as the Shimadzu 1900i, the Analytic Jena Specord 200/10 or the Thermo Fisher Evolution Pro. All combined with our dissolution tester DT 950/9510 and a peristaltic pump IPC 8 or piston pump PVP. All system components are controlled by the Disso.NET PC software.




The ERWEKA Disso.NET software is the perfect 21 CFR Part 11 compliant companion to our dissolution systems. The software provides support for all test methods manageable with the ERWEKA DT dissolution testers as well as the automated RoboDis II+.

Disso.NET helps you with standard dissolution jobs, handles qualifying tasks and offers control over each single function of the connected devices (e. g. dissolution tester, UV-Vis spectrophotometer or HPLC analysis unit). Our audit trail generates detailed protocols of all events and times. The software additionally includes an easy-to-use editor for comfortable programming of the dissolution methods (for highest repeatability). After finishing the dissolution test, Disso.NET generates comprehensive reports (as PDF-files) with your corporate logo and/or exports the results (e. g. in XML format).

Disso.NET 4 has an Active Directory connection. This allows cross-system login data and user passwords. Countless passwords are thus avoided and easy handling is ensured.

Semi automated Dissolution Online System with UV-Vis-Analysis


Advanced dissolution system with a broad feature set.

100 % USP/EP/JP compliant

100 % USP/EP/JP compliant

As all ERWEKA products, the dissolution online systems are also 100 % USP/EP/JP compliant.

Controlled by Disso.NET

Controlled by Disso.NET

Full system control of all connected components by the Disso.NET PC software.

USP methods 1, 2, 5 and 6

USP methods 1, 2, 5 and 6

Using of many kinds of attachments for different USP methods due to the standardised shaft design.

Easy cleaning

Easy cleaning

Easy 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.

UV/VIS analysis

Advanced UV/VIS analysis

Different brands of UV/VIS analysis devices are available.


Proven ERWEKA quality across the whole system.

  • DT 950

    Dissolution tester DT 950

    Heart of the dissolution online system

    The DT 950 is core to our online system. It is 100 % compliant to the USP methods 1, 2, 5 and 6, thus allowing a versatile range of dissolution testing to be done by our system. Additionally, it offers the flexible high-head and low-head modes.

  • ASS-9

    Automated sampling station ASS-9

    Precise sampling according to the USP sampling points.

    The automated sampling station ASS-9 is an add-on module to the DT 950, responsible for taking samples according to the USP sampling points right from the vessel itself. With the help of the connected pump, these media are then pumped over to the FRL 624/724/824 sample collector.

  • Pump choices

    Peristaltic pump IPC 8 or PVP 820 piston pump

    Efficient and versatile pump for ERWEKA dissolution systems.

    The peristaltic pump IPC 8 offers an accuracy of +/- 0.5 ml and is the basic pump provided with ERWEKA dissolution systems.

    The Erweka made piston pump PVP has nearly maintenance free ceramic heads and is used for high volume.

  • UV/VIS Analysis

    Versatile UV-Vis analysis devices available

    Always the right one available for your needs.

    We offer several UV/VIS analysis devices for our online systems, all fully supported by Disso.NET.

    • Shimadzu 1900i
    • ThermoFischer Evolution Pro
    • Analytica Jena Specord
  • Disso.NET

    Controlled by Disso.NET

    Advanced dissolution software for PC.

    Disso.NET takes over full control of our online systems. The software offers an advanced user management, broad features and comprehensive data export functions.

  • Options 14 test stations online system

    DT online system variants

    Easily adjustable to your needs.

    • DT 9510 series with 12-14 test stations, IPC 16 peristaltic pump and Analytic Jena Specord 210/16 spectrophotometer for UV-Vis analysis
    • alternatively ERWEKA PVP 620 or 820 piston pump for filtration down to 0.22 μm available



All the facts.

  • Dissolution tester DT 950 series
  • IPC 8 peristaltic pump, controlled via RS 232 interface by connected PC with Disso.NET
  • Different brands of spectrophotometers available
  • System controlled by Windows based, CFR 21 part 11 compliant ERWEKA Disso.NET software
  • Brand name PC with Windows 10 available
  • Cuvettes for UV-Vis spectrophotometers with fluoropolymer tubing (0.8 mm o.d.) and screw terminals with various path lengths available (1 mm, 2 mm, 5 mm, 10 mm)


Tailored to your needs.

  • Shimadzu 1900i double-beam spectrophotometer including cell changer (8 positions)
  • ThermoFischer Evolution Pro
  • Analytic Jena Specord 200/10
  • IQ/OQ/PV service & documents
  • Maintenance contracts


Get an impression of the ERWEKA dissolution online system and its components.


Our specsheet.

DT Online System Specsheet

DT Online System Specsheet

The DT Online system brochure with all information.

Request DT Online System brochure!

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