CPC Main Group B01L 1/00 Enclosures; Chambers (provided with manipulation devices or glove boxes B25J21/00) 4 direct subcodes Child Classifications Navigate with arrow keys, Enter to open B01L 1/02 Air-pressure chambers; Air-locks therefor B01L 1/04 Dust-free rooms or enclosures B01L 1/50 B01L 1/52