Copley Scientific Flow Meter DFM4

Ensure the following components are removed and replaced

Connect the flow meter to the induction port using a suitable adapter

Select the flow meter model to use

Verify the flow meter is calibrated for exit flow

Measure the flow rate at the inlet of the impactor

Is the flow rate within +/- 5% of the target flow?

Ensure all equipment is connected properly

Is the BAC 2100/-R unit powered on?

Conventional Metered Dose Inhalers (MDIs) Testing

Set the air volume to not exceed 2 litres for DDU testing

Is the MDI Actuation Sensor properly clipped onto the MDI canister?

Is the operation triggered by the MDI Actuation Sensor or footswitch?

Set the flow rate to 28.3 or 30 L/min

Test Set-up - Delivered Dose Uniformity (DDU) of DPIs

Enter the desired pressure drop for the inhaler (e.g. 4.0 kPa)

Replace the inhaler with a suitable flow meter (unless inline method used)

Check for critical (sonic) flow conditions (P3/P2 > 0.5)

Is the flow rate required to generate the pressure drop more than 100 L/min?

Automatically measure and report test set-up parameters

Test Set-up - Aerodynamic Particle Size Distribution (APSD) of DPIs

Connect a suitable flow meter to the inlet of the impactor and turn on the vacuum pump

Enter the flow rate required (e.g. 60 L/min)