DRX-499 has remained, for many years, the mainstay 500 MHz spectrometer for most of the research work using NMR in the department. It continues to be a popular spectrometer that is very reliable and stable. It is used for multinuclear 1D as well as 2D spectra acquisition.
Between the two 500 MHz instruments, DRX-499 is preferred for 13C, 19F, and 31P detection.
Features
- Bruker Avance DRX series instrument
- 1H Frequency: 500.13 MHz
- 2H field-frequency lock system
- MAGNET and Shim system
- Oxford narrow bore (53mm) Cryomagnet
- BOSS2 shim system
- 28 RT shim gradients
- BSMS/2 keyboard
- Bruker vibration damper system included (doughnut type)
- Host Operating System: RedHat Enteprise Linux 6.2
- VT range: −80°C to +70°C (up to 12 hrs. at max temperature)
- RF Section
- Three channels (FCU1, FCU2 and FCU3)
- Dual (50 W 1H + 300W X) BLAXH50 amplifier
- Dedicated 300W BLAX300RS amplifier for third channel
- System is equipped with QNP switch accessory to perform 19F {1H} double resonance experiments.
- HPPR/2 2H-STOP preamplifier.
- Pulse shaping capability to design shaped and shifted RF pulses and gradient pulses.
- Digital
- Digital quadrature detection
- 5 MHz sampling rate ADC
- Accustar Z gradient amplifier that can generate a maximum of 56 Gauss/cm field gradients is part of the system.
- Gradient assisted shimming can be performed with available software in Topspin.
- Software
- Runs on TOPSPIN 1.3
Currently installed Probehead
Bruker triple resonance BBO : X { 1H } with Z-gradient
Other probeheads available:
- Bruker triple resonance TXO : 19F { 1H,13C } with Z-gradient
- Bruker triple resonance HCP : 1H { 13C, 31P } with Z-gradient
- Bruker triple resonance HCN : 1H{ 13C, 15N } with Z-gradient