The Beseler 35mm Mixing Chamber can be used when you want to take photo prints from 35mm format color negatives using the Beseler 23CII or Beseler 23C Series EnlargersIt increases the light output of the lamp head while using smaller negativesThis mixing chamber is mainly used when we require great light intensities or long printing time with slow printing materialsIt is highly compatible with the Dual Dichro and Dual Dichro S Colorheads