Enzymes COL G (120 U) recombinant collagenase class I + COL H (510 U) recombinant collagenase class II + Thermolysin (300 μg)
  Stock solutions preparation 1. Dissolve COL G in 1.8 ml sterile H2O and make 3 aliquots of 600 μl (each aliquot is the Solution A) and store at -20°C 2. Dissolve COL H in 600 μl sterile H2O and make 3 aliquots of 200 μl (each aliquot is the Solution B) and  store at -20°C 3. Dissolve the Thermolysin in 300 μl sterile H2O and make 3 aliquots of 100 μl (each aliquot is the Solution  C) and store at -20°C.