The Agilent 400 MHz OneNMR probe provides maximum utility for the Agilent 400-MR NMR system. The OneNMR probe is simultaneously optimized for both high- and low-band frequencies, delivering the performance advantages of both the classic carbon probe (direct detect) and the highly sensitive proton probe (indirect detect) — all in a single design. The OneNMR probe also provides outstanding RF homogeneity, excellent salt and solvent tolerance, improved water suppression and superior lock sensitivity compared to traditional probe technology.