The MERLIN 4 is a mid-range CCD spectrometer available as a dedicated single-base unit as well as a versatile multi-base system. It is well suited for the metal production and inspection & contract lab industries and perfectly suited for the metal processing industry. It is available in 2 models: the MERLIN 4 Ultra and MERLIN 4 Visible. The MERLIN 4 Ultra covers a range of 175-521 mn and the MERLIN 4 Visible: 201-521 mn. Most calibration elements are covered.