The storage, handling and use of solid and liquid oxidizers and organic peroxides within a laboratory unit shall be in accordance with FC Chapters 27, 39 and 40 and the total quantity of all such material, excluding any quantities in a storage room, shall not exceed 40 pounds (18.16 kg), provided that not more than 2 pounds (0.908 kg) of such oxidizers are Class 3 oxidizers and not more than 1 pound (0.454 kg) of such peroxides are Class I organic peroxides.
Exception: The total aggregate quantity of solid and liquid oxidizers and organic peroxides allowed within a laboratory unit that is provided with walls, floors and ceilings that separate the laboratory unit from all adjoining areas by 2-hour fire-rated construction shall not exceed 50 pounds (22.7 kg), provided that not more than 2 pounds (0.908 kg) of such oxidizers are Class 3 oxidizers and not more than 1 pound (0.454 kg) of such peroxides are Class I organic peroxides.
Exception: The total aggregate quantity of solid and liquid oxidizers and organic peroxides allowed within a laboratory unit that is provided with walls, floors and ceilings that separate the laboratory unit from all adjoining areas by 2-hour fire-rated construction shall not exceed 50 pounds (22.7 kg), provided that not more than 2 pounds (0.908 kg) of such oxidizers are Class 3 oxidizers and not more than 1 pound (0.454 kg) of such peroxides are Class I organic peroxides.