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.
1975
1895
2014
1950
2019
1966
2013
1898
1935
1938
1974
2015
1997
2005
1987
2016