... the anteport,open the vent used for spraying disinfectant, spray the disinfectant and close the vent, wait for 20 minutes ... the transfer window, close the anteport, spray disinfectan through disinfectant vents. 3, repair and maintenance (1), Plexiglass surface should ... avoid corrosive cleansers bu can use ammonia disinfectant or Xidi Ling. (2), Efficient filter should be ...