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 Fast Screening Andersen (FSA)
 Fast Screening Impactor (FSI)
Volume and Resistance Compensator (VRC)

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The Volume and Resistance Compensator (VRC) enables analysts to match the flow resistance and flow rate rise-time profiles between a full resolution impactor and its abbreviated counterpart to ensure comparable conditions for aerosol generation, supporting improved equivalence in aerodynamic particle sizing measurements.

  • Suitable for use with all types of abbreviated impactors

  • Easily adjustable for different set ups

  • Ensures parity between test methods, improving data comparability

  • Resistance and volume compensator designed using Copley expertise

VRC: Improving Full Resolution and Abbreviated Impactor Data Parity

Differences in total volume and flow resistance between a full resolution cascade impactor and its abbreviated counterpart is known to cause variability in the flow rate rise-time profiles between the two test set-ups. This difference reduces parity between test conditions, especially for passive, dry powder inhalers (DPIs) where start-up kinetics can be important.

Connecting inline between a critical flow controller (TPKi Series only) and an abbreviated impactor, the resistance and volume compensator is a robust easy-to-use tool that allows users to refine flow rate rise time profiles for AIM apparatus to ensure comparable conditions for aerosol generation.

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