<p><strong>A Conversation with Dr. Christopher Rosin, Senior Application Scientist at G.A.S. Dortmund</strong></p> <p>Repeated headspace sampling is a powerful tool for studying biological systems over time. However, obtaining reliable measurements from blood cultures, microbial samples, or other biological matrices presents a challenge: researchers need to collect multiple samples throughout an experiment while minimizing carry-over and maintaining consistent sampling conditions.</p> <p>At G.A.S. Gesellschaft für analytische Sensorsysteme mbH in Dortmund, a patented closure attachment was developed to support automated serial headspace sampling using PAL automation. We spoke with Dr. Christopher Rosin, Senior Application Scientist at G.A.S., about the analytical challenges that inspired the development, the role of automation, and future opportunities for time-resolved biological monitoring.</p>