20 February Invitation to the 31st VIAQ informal group session VIAQ-31-01	VIAQ-31-01	2025-02-20
17 March VIAQ: Agenda for the 31st (March 2025) session VIAQ-31-02	VIAQ-31-02	2025-03-17
17 March VIAQ informal group progress report VIAQ-31-03	VIAQ-31-03	2025-03-17
19 March MR3: Recommendation on Part 4 (outside air pollutants) (OICA) VIAQ-31-06	VIAQ-31-06	2025-03-19
17 March MR3: Proposals to improve VIAQ test procedures VIAQ-31-07	VIAQ-31-07	2025-03-17
28 March MR3: Draft Part IV of the Mutual Resolution on VIAQ VIAQ-31-08/Rev.1	VIAQ-31-08/Rev.1	2025-03-28
4 April Minutes of the 31st (March 2025) VIAQ informal group session VIAQ-31-10	VIAQ-31-10	2025-04-04