Welcome to Triangle Analytical, Inc We are committed to providing quality, reliable, honest service and support to the rapidly expanding NMR community. With engineers located across the country, Triangle Analytical, Inc has a combined 120 years of experience servicing all types of spectrometers and NMR magnets. Triangle Analytical, Inc is your best source for pre-owned late model spectrometers, system spares, magnet and spectrometer troubleshooting, maintenance, repair, system relocations, cryogen transfill services, and accessories.