Spectrophotometric determination of ozone in air with indigo disulphonate.
D000388:Air / Q000032:analysis*; D007203:Indigo Carmine; D007211:Indoles; D010126:Ozone / Q000032:analysis*; D013055:Spectrophotometry, Infrared / Q000379:methods
D007211:Indoles; D010126:Ozone; D007203:Indigo Carmine