... the performance of the filter and judging purify class.Feature:l Flow rate: 50L/minl Display eight channels simultaneouslyl ISO14644 and ... source : Laser diode (30,000 hours mean time between failure)l Max permissible sampling concentration : 35.000PCS/Ll Dimension (W ... Supply : 220V±10%,50Hz±2Hzl Data conversion (ft3 and m3)l Accessory: Case, Operation manual, Factory inspection report, Filter, Power ...