Helium (high purity, GC carrier gas), hydrogen (pre-purified,reduction), methane (pre-purified), and natural gas(93.5% CH4, 3.8% C2H6, 1.0% C3H8, 1.2% N2, 0.5% CO2, with other trace C4–C6 and <38 ppm sulfur compounds) were supplied by Oxarc.
การแปล กรุณารอสักครู่..