Purity: 93% ±3% @5L Power supply : 320 VA Flow : 1-5L Noise : 48dB Output Pressure : 30-70 kPa Size : 38*32.5*59 cm Certificate : CE/ISO13485 Compressor : GSE Molecular sift : CECA Instrument classification : Class II Warranty : 2 years After-sale Service : Free spare parts