Particle size testing machine

breathing simulationautomaticbreathing apparatus and face mask

Overview
One of the main factors influencing the amount of inhaled drug available to the patient is the interface between the facemask and the patient. Evaluating the effect of facemask interfaces on delivered dose uniformity (DDU) and aerodynamic particle size distribution (APSD) is essential for spacer/VHC and nebuliser product development and in‑vitro performance characterization.

Tests covered

• Delivered Dose Uniformity (DDU)
• Aerodynamic Particle Size Distribution (APSD) — impactor‑based

Related products and components described on the page

• Facemask Test Apparatus for Spacers & VHCs — Model FMA
• Adult / Child / Infant face models (face heads)
• Filter holder and adapter
• Breath Actuation Controller BAC 100i
• Low Capacity Pump LCP7
• Breathing Simulator BRS 200i
• Label printer and other accessory items
• Spacers & VHCs systems (referenced within facemask testing workflows)

Documentation
Brochures and product literature for the FMA and associated accessories are referenced on the page; brochure viewer links are provided where available to support technical evaluation.

Notes
The page includes image assets showing facemask testing setups and facemask‑DDU visuals, and describes the use of facemasks with spacers, valved holding chambers (VHCs) and nebulisers to simulate realistic in‑vitro conditions.

Technical specifications

• Product: Facemask Test Apparatus for Spacers & VHCs (Model FMA)
• Primary purpose: Evaluate facemask interface impact on DDU and APSD for spacers, VHCs and nebulisers
• Compatible accessories: Adult/Child/Infant face models, filter holder & adapter, BAC 100i, LCP7, BRS 200i, label printer
• Supported test modes: DDU (delivered dose) and APSD (impactor‑based)
• Manufacturer: Copley Scientific