Thermo Nicolet NEXUS 870 FT-IR ESP Nicolet 870 Thermo 870 with NEXUS 870 MCT DETECTOR with existing instrument computer, Monitor, etc... Ships all tested out and ready to go when shipped Optional detectors that may possibly be used with 870 NEXUS system as gathered from web- Liquid helium-cooled bolometer (600 – 50cm-1) DTGS-Pyroelectric detector (700-50cm-1) DTGS-TEC detector (11,000 – 375 cm-1 InGaAs detector (12,000 – 3800 cm-1 liquid nitrogen cooled MCT-B Detector (11000 – 400cm-1) Si detector (25000 – 8600 cm-1). The spectrometer is capable of doing continuous scan and step scan with a resolution up to 0.125 cm-1. It also has a port for external source and another port for external detector for specific applications.