In 2012 I started testing a new hydrogen peroxide based bleach with an acid as a stabilizer, citric acid was the first choice, and these were my first positive results with Fomapan R100 on 16mm film.
1940
1959
1963
2007
1932
1938
1969
1930
1922
1970
2019
1974
2017
1925
2002
2022
1987
1894