Systematic Targeting of Microplastics (STOMP) Research

May 6, 2026 - Amendment 2 to STOMP ISO ARPA-H-SOL-26-152. This amendment incorporates the following changes: 1. Corrects a typo under Figure 4: TA1.2 metrics, from 50 µm to 50 nm. 2. Section

B. Cost and

Pricing Data Support under page 46 has been revised. The

requirements that have been removed are only necessary if proposers are selected for negotiations. All other terms and conditions remain unchanged. ____________________________________________________________ April 20, 2026 - Amendment 1 to STOMP ISO ARPA-H-SOL-26-152 This amendment corrects the Figure number on Page 11 and incorporates Figure 6 on Page 15. _____________________________________________________________________ All

questions submitted to the ISO will be compiled and addressed. Responses will be posted to the STOMP Frequently Asked

Questions (FAQ) page. Potential proposers are encouraged to monitor the FAQ page regularly for the latest information and updates: https://arpa-h.gov/explore-funding/programs/stomp/faqs _____________________________________________________________________ The Advanced Research Projects Agency for Health (ARPA-H) is posting this Innovative Solutions Opening (ISO) in support of the Systematic Targeting Of MicroPlastics (STOMP) Program. ARPA-H anticipates multiple Other Transaction (OT) Agreements will result from this announcement. Interested parties are invited to review the STOMP_ISO_ARPA-H-SOL-26-152 and assciated