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.
1987
2014
1940
2016
1960
2005
1939
2013
1963
1997
1935
1937
1993
2018
1956
1966
2000
1984