Product category:
Mechanical testing equipment
News Release from: Copley Scientific
Edited by the Laboratorytalk Editorial
Team on 26 March 2008
Inhaler testing tools help QbD
implementation
New tools from Copley Scientific streamline inhaler product screening, accelerating acquisition of the data required to implement Quality by Design (QbD).
These tools modify the performance of cascade impactors currently specified in USP and Ph.Eur, allowing rapid identification of the fraction of a dose that will be inhaled Cascade impactors are routinely used for the testing of all inhaled products
This article was originally published on Laboratorytalk on 13 Feb 2007 at 8.00am (UK)
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The need for information to ensure QbD is fuelling a demand for analytical tools that can quickly deliver useful data.
Copley has responded by developing accessories for cascade impactors that simplify the study of key performance characteristics.
Options are available for the Andersen and Next Generation pharmaceutical impactors (ACI and NGI) and for the Multi-stage liquid impinger (MSLI).
A new exhaust cup allows flow extraction from any stage within the NGI, with the added capability of reintroducing flow further downstream, thereby reducing the number of impactor stages utilised.
A new deep cup also allows by-passing of a single stage, the sample simply passing through without impaction.
For the ACI a similar effect is achieved by simply omitting stages from the standard stack; Copley now supply modified spring clamps and/or a Quick-Clamp that ensure an adequate seal for modified configurations.
With respect to the MSLI a four stage option, in addition to the current five stage version, is also available on request.
Using these options to coarsen the separation characteristics of the instrument reduces the number of fractions produced and the associated analytical burden.
The developer can focus specifically on the fine particle fraction, the fraction that will be inhaled, or whichever size range is of most interest.
Rigorous multi-stage cascade impaction provides more detailed information as it is needed.
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