---
title: High delivered dose in a single inhalation by retaining carrier-fraction in DPI blister
description: At RDD Europe 2025, Dr Heather Jameson presented our poster on carrier-based formulation delivery using our Quattrii DPI platform.
image: https://chi.uk/hubfs/Quattrii-before-and-after.jpg
---
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[Heather Jameson](https://chi.uk/chi-blog/author/heather-jameson)May 9, 2025 9:00:00 AM< 1 min read
# High delivered dose in a single inhalation by retaining carrier-fraction in DPI blister
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At RDD Europe 2025, Dr Heather Jameson presented our poster on carrier-based formulation delivery using our Quattrii DPI platform.
In her poster, which was co-authored alongside CHI's CEO David Harris, Heather highlighted that Quattrii detaches the API from the carrier particles and retains the carrier fraction within the blister, delivering only the aerosolised active dose to the lung.
You can watch a short presentation of her poster here:
You can [download a PDF copy of the poster here](https://chi.uk/hubfs/CHI%20Poster%20RDD2025.pdf).
#### [Heather Jameson](https://chi.uk/chi-blog/author/heather-jameson)
With a PhD in Fluid Mechanics and several years' experience in medical and drug delivery design consultancy, Heather brings technical expertise and commercial insight to the team. Prior to CHI, Heather developed drug delivery devices at Springboard Pro, including injectables and inhalation devices. She completed her PhD in Fluid Mechanics at the Whittle Laboratory (Cambridge UK), where her research focused on the downstream vorticity effects of leakage flows in jet-engines. Heather is passionate about applying fundamental physics to tackle the current challenges of inhalation devices, to develop improved outcomes for patients.
[mailto:heather.jameson@chi.uk](mailto:heather.jameson@chi.uk)
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