def calc_desorbtion_rate(hsc, std_pa, w, cgas, frate, area):
    """
    With H std content in ppm(hsc), H std peak area (std_pa), weight in g(w), carrier gas µmol/s (cgas),
    flow rate in mL/min (frate), cycle time in min (ctime) and area (from read_cs_file) returns
    hydrogen desorbtion rate in ppm/min
    """
    return hsc * frate * (cgas * 1e-06) * 12 / (std_pa * w) * area
