The Moersch ATS Rapid Fixer is a highly concentrated, ammonium-thiosulfate based fixer for use with black-and-white films and papers. It does not contain any sort of hardener and has rather low pH value (6.0 - 6.5). Comes in a bottle of 1L.
Recommended dilution for black-and-white film and paper: 1+5 to 1+10.
Capacity per liter concentrate: 50-60 films (35mm - 36 exposures) or 2-4 m².
Fixing time films: 2-4 minutes at dilution 1+5.
Fixing time papers: 45-60 minutes at dilution 1+5 with constant agitation.