The Department of Chemistry and Biochemistry The Michael Faraday Laboratories Northern Illinois University DeKalb, IL 60115-2862 (815) 753-1131
The Avance III 500 instrument can be configured with a 5 mm BBFO probe (z‐gradient) which is tunable from 109Ag to 19F, or a 5 mm TXI (x,y,z‐gradient) probe for inverse detection of 1H/13C/15N. For larger sample volumes, this instrument can also be equipped with a 10 mm BBO probe which is tunable form 109 Ag to 31P.
The 500 MHz instrument has gradient capability and is equipped with a variable temperature controller using either a BCU (down to −5°C) or a liquid nitrogen evaporator.
Variable temperature experiments can be run considering probe limitations. The sample temperature range not be exceeded is:
BBO and BBFO probe: −120°C to +150°C.
TXI (X, Y, Z gradient) probe: −50°C to +80°C.
For experiments exceeding the temperature limits of plastic spinners (−50°C to +50°C), ceramic spinners must be used.