GNR USA – Home Welcome to GNR USA! GNR USA Instruments LLC is your premier source for used and rebuilt BAIRD and GNR optical emission spectrometers. We also provide full warranty and after warranty support and service. Product Lines: Optical Emission Spectrometry MiniLab 150 MiniLab 300 Solaris CCD NF Solaris CCD Plus Metal Lab Plus Atlantis Esaport Applications: Metals: Advanced solutions to perform a wide variety of analytical tasks in the metal industry. Material Science: Ensure high quality production processes with instruments that meet high quality standards for chemical and mineralogical testing.