OINDP testing experts Copley Scientific have announced the introduction of the new Volume and Resistance Compensator (VRC), which is designed to make abbreviated impactor measurements (AIM) more comparable to full resolution impactor measurements when measuring aerodynamic particle size distribution (APSD).
According to the company, the VRC can be especially valuable for testing passive dry powder inhalers because DPI aerosolization is highly dependent on air flow rate acceleration, which can vary significantly between AIM and full cascade impactor set-ups. The VRC helps to overcome that problem by providing users with control over flow rate rise time profiles, the company said. Volume and flow resistance can be independently adjusted, allowing users to match full Next Generation Impactor and Andersen cascade impactor measurement test conditions with NGI AIM and ACI abbreviated set-ups.
Copley CEO Mark Copley commented, “Copley is committed to developing products in lockstep with the evolving requirements of the inhalation community to provide well-engineered solutions that support progress. AIM has merit as a route to improved analytical productivity but presents challenges too. The VRC can help analysts to optimize the use of AIM, and EDA, by improving equivalence between test conditions. It augments our existing range of AIM instrumentation which comprehensively addresses the needs of those working in this area.”
The VRC is the second Copley accessory for improved OINDP testing that the company has launched in recent months. In September 2022, Copley announced the launch of the EnviroMate benchtop environmental control chamber to help achieve reduced variability during DDU and APSD testing.
Read the Copley Scientific press release.
