19th online meeting of TC 1.9 "Ionizing radiation and radioactivity" was held on 7 February, 2023.
18th online meeting of TC 1.9 "Ionizing radiation and radioactivity" was held on 22–23 November, 2021.
17th online meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 30 November, 2020.
16th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 16-20 September, 2019 in Chisinau, Moldova.
15th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 18-20 September, 2018 in D.I.Mendeleyev Institute for Metrology (VNIIM), Saint-Petersburg, Russia.
14th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 3-5 May, 2017 in CENTIS, CPHR, Havana, Cuba.
13rd meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 6-7 October, 2015 in AzStandart, Baku, Azerbaijan.
12th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 28-29 April, 2014 in Tashkent, Uzbekistan.
11th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held
on 25-26 October, 2012 in VNIIFTRI, Mendeleevo, Russia.
10th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 2-3 November, 2010 in Minsk, Belarus.
9th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 21-22 October, 2009 in Chisinau, Moldova.
8th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 20-21 November, 2008 in Kharkov, Ukraine.
18th online meeting of TC 1.9 "Ionizing radiation and radioactivity" was held in October, 2006, in Sant-Peterburg, Russia.
4th meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 9-11 June, 2004 in Kharkiv, Ukraine.
3rd meeting of TC 1.9 "Ionizing radiation and radioactiv" was held on 11-12 March, 2003 in Chisinau, Moldova.