The Heriot-Watt University NMR Unit operates three high-field spectrometers, detailed below.
Bruker AVIII 300MHz
This instrument, installed early 2010 and featuring the state-of the-art ‘nanobay’ compact console is our open-access workhorse (running>1000 jobs/month). After a brief training session, users are able to access this machine at their leisure on a first come-first served basis.
The spectrometer is open to research students and undergraduates, who make use of it for both teaching lab work and projects. All experiments are predefined and automated, currently the following nuclei are available; 1H, 13C, 31P, 19F and 11B though others can be introduced if requested. The turn-around time on this spectrometer is rapid; typically 60% of jobs are completed within 10 minutes of submission. All raw NMR data is securely archived forever and can be retrieved by users for remote processing both off- and on-campus.
Bruker AVIII 400MHz
Upgraded from DPX to AVIII in early 2010, this machine is used principally to run less routine experiments which require more user input. These include 2D experiments, most frequently C-H correlation, NOESY and COSY, multinuclear and variable temperature experiments. The spectrometer is fitted with an MAS control unit and an exchangeable solids probe for solid-state NMR. Users can submit work for this instrument to the departmental service if they so wish, however they are encouraged to carry out their own experiments and learn more about the fascinating world of NMR spectroscopy. Again, all data is kept for ever and users are encouraged to carry out their own processing.
Bruker AVI 400 MHz
This spectrometer was installed in 2014 to help accommodate increased demand for the service as the Institute expands. With two probes available (an inverse BB and dual C/H) it is open to postgraduate users and staff. It is currently set up for manual operation to give maximum flexibility in experiment design and execution. The dual probe makes this the perfect spectrometer for long 13C accumulations, required for dilute samples.