Flow Controllers

Our Critical Flow Control TPK range and Breath Actuation Control BAC range are designed based on the requirements set out by both the European and the United States Pharmacopoeia for testing MDIs, DPIs, Nebulisers, ADIs and Nasal Products.

TPK 100i – Critical Flow Controller

The Critical Flow Controller TPK 100i is designed to provide (and document) all of the critical parameters employed in the delivered dose uniformity (DDU) testing and aerodynamic particle size distribution (APSD) measurement of Dry Powder Inhalers (DPIs). It can also be used as a Breath Actuation Controller (BAC) for testing Metered Dose Inhalers (MDIs) with Spacers/Valved Holding Chambers (VHCs) and breath-actuated MDIs in accordance with Ph.Eur. 0671 and USP Chapter <1602>.

  • Simplified workflow with user-guided test set-up

  • Automatic calculation of test duration from volume and flow rate

  • Device (inhaler) flow resistance calculator

  • User warned if sonic flow conditions are not met

  • Extensive data output options

TPK 100i/-R: Technical Specifications

User interface:

Resistive touchscreen

Flow setting:

Manual and Automated

Temperature / relative humidity measurement capabilities:


MDI Actuation Sensor | Footswitch

Critical Flow Control


Solenoid valve opening / closing time:

25 / 25 ms

Timer range:

0-600.0s resolution 0.1s

Dimensions (w x d x h):

415 x 315 x 250 mm

TPK 100i User Interface

  • Guided test set-up process


  • Target v Actual test parameters (before test run)

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