11.53.00 Laboratory Equipment
11.53.29 Laboratory Controlled-Environment Cabinets
11.53.13 Laboratory Fume Hoods 11.53.13.13 Recirculating Laboratory Fume Hoods 11.53.16 Laboratory Incubators 11.53.17 Laboratory Equipment Washers 11.53.19 Laboratory Sterilizers 11.53.23 Laboratory Refrigerators 11.53.26 Laboratory Freezers 11.53.29 Laboratory Controlled-Environment Cabinets 11.53.33 Emergency Safety Appliances 11.53.43 Service Fittings and Accessories 11.53.53 Biological Safety Cabinets