Ocean Optics (makers of the fluorimeter and spectrophotometer you use in the Quinine determination 315/325 lab) sells a Mercury Argon Lamp for use as a calibration standard. Together, the atomic emission lines of Hg and Ar allow calibration throughout the UV-Vis region. In particular, Argon has emission lines at 706.722 nm and 710.748 nm. For a spectrometer with reciprocal linear dispersion of 3.5 nm/mm, what is the required entrance slit width (in mm) needed to resolve the two Argon emission lines