Based on a 120-mm focal length spectrograph with a single aberration-corrected concave grating with a flat field output. The detector is a back-thinned CCD cooled to –50°C. The MacroRAM includes a standard interlocked sample compartment and holders for cuvette-based liquid measurements as well as a solid sample holder. A thermostatted cuvette holder is also available. A fibre port is standard.