Nalorac 3mm MIDG 500B 500 MHz probe p/n 961 263. This ZSPEC 3mm micro indirect detection gradient probe has three observation/excitation coils. X Channel: 50-203 MHz, Lock Channel: 76.8 MHz, H Channel: 500 Mhz. The observe coil is 16mm long. This 3mm probe is equipped for variable temperature operation from +80C to -20C. This probe was used with a 500 MHz Bruker NMR. Please contact us for complete Bruker NMR probe details. (Bruker probe/Nalorac probe/MIDG-500B)