ATS Xtend™ Offline

Dissolution tester automatically withdraw, filter, and collect samples in tubes, capped LC vials, or well plates

  • SAMPLING - Always take samples the same way at reproducible withdrawal positions
  • OFFLINE - Collect samples in glass tubes, capped LC vials, or HPLC / UPLC wellplates
  • METHODS - Program multiple timepoints and automatically replace withdrawn sampling volumes
  • FAST - Timepoint intervals of less than 1 minute possible with powerful piston pump
  • MODIFIED RELEASE - Automatically change filters at defined timepoints for your DR / MR methods
  • FINE FILTRATION - Push through filters with a minimum porosity of 0.2 microns for offline HPLC / UPLC analysis
  • FLEXIBLE - Maintain full flexibility without dedicating your dissolution tester to an analytical device


Dissolution process steps with a semi-automated Offline dissolution testing system.


Samples in rack for dissolution tester

Reproducible sampling.

The ATS Xtend™ Offline automates essential steps of your dissolution test - making them highly repeatable. Samples are simultaneously taken from 6-8 vessels, filtered, and collected in tubes, capped LC vials, or wellplates. Standardization of the sampling position, pulling force, volume, timing, and filtration reduces potential sources of variability and makes your testing process more efficient.


Multi-purpose media selector perform one-touch sample line cleaning on completion of a test.

Multi-purpose media selector.

Perform one-touch sample line cleaning on completion of a test. Simply connect a water tank to the multi-purpose selector of your Xtend™ dissolution bath and start the automated tube-flushing routine. Up to 3 additional sources can be connected to automatically replace withdrawn sampling volumes during dissolution tests with multiple timepoints or to execute pH changes by adding media.

Filters with a minimum porosity of 0.2 microns for the filterstation dissolution tester USP 1256

Highly effective filtration.

Xtend™ dissolution line is built on flexible sampling and filtration. Mimic existing environments when replacing old dissolution testers to ensure comparability of results. Use tip filters or sieves for pre-filtration, disc filters in the suction head, or standard syringe filters. Require fine filtration for your analytical finish? No problem - the powerful CP piston pump can push through filters down to 0.2 microns and also handles foaming media with surfactants. 

User-friendly EasyTouch™ interface assists the operator in executing tasks for dissolution tester AT Xtend

Easy to use.

Operators simply select a method on the EasyTouch™ user interface and press START to initiate the dissolution test. In full compliance with the FDA data integrity guidance on segregation of roles, only authorized personnel like supervisors or administrators can modify existing methods or create new recipes. To share methods between multiple systems, the ATS Xtend™ can be conveniently networked with data management software.

Individual video monitoring of each dissolution tester vessel throughout the test.

Monitoring dissolution.

Use AutoLift™ to automatically protocol temperatures inside all 6-8 vessels before test start, when taking samples, or at any point during the test in your dissolution tester. Additionally, you can record dissolution behavior inside each vessel with CenterView™ to document that proper procedure has been followed, or more importantly, that a deviation has occurred.

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AT dissolution tester bath for manual and semi-automated testing.

AT dissolution tester

Xtend™ dissolution bath with flexible sampling & monitoring functions.

Benchtop pump with maintenance-free ceramic piston heads for dissolution tester USP 1256.

CP piston pump

Fast and powerful to push through filters and to handle foaming media.

SAM SR offline configuration sample manager to collect samples for dissolution testing from 15 timepoints.

SAM SR sample manager

Collect samples in tubes, capped LC vials, or wellplates for offline analysis.


Benchtop filter station to automatically change syringe filters for dissolution tester USP 1256.

FS filter station

Automated change of syringe filters for multi-timepoint methods (DR/MR).

Syringe pump for semi-automated dissolution tester with offline systems.

SP syringe pump

Space-saving pumping module mounted on SAM sample collector.

Data management software for all methods, results, and users.

q-doc® software

All your data in one place with built-in 21 CFR part 11 compliance.

WinsotaxPlus Dissolution testing software 21 CFR Part 11 compliant, controlling all aspects of data capture and analysis with customized reporting and exporting.


Dissolution software to manage methods, results, and reports.

MPS media preparation station for manual and semi-automated dissolution testing systems.

MPS media station

Mobile media preparation station to heat, degas and dispense in vessels.

Video monitoring of the dissolution process in each individual vessel.


Video monitoring of the dissolution process in each individual vessel.