Oral presentation on the topic simple, low-cost hybrid paper-based sensors for rapid simultaneous copper and oxidative potential analysis of particulate matter on Research and Development Personnel Network Forum hosted by TSRI at the Regent Cha Am Beach Resort, Phetchaburi held on Nov 20-23, 2024. This research was financially supported by Research for New Scholar 2021. The outputs of this grant are international publications, the paper-based sensors for analyzing compositional particulate matter and allergy risk in rubber latex, and 2 prototypes.