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Efree RF Architecture

  • Balanced RF design
  • Based on Dual Coil design

  • Low Inductance RF Coil strongly minimizes RF heating

  • High RF efficiency

  • High Sensitivity (X/Y)

  • High 1H fields (but higher RF power required)

  • Used in MAS and Static probes

  • Best for salty/wet samples

Progressive Pitch™

  • optimized geometry of RF coil
  • increased B1-homogeneous region (~+35%)
  • increased S/N

Used in:

  • TL2 and Efree probes
  • MAS and Static

Efree MAS Probes

Features

  • Available for 500-950 MHz
  • Triple Resonance
  • 4.0mm/ 3.2 mm/(2.5 mm)
  • Top Eject
  • Frequency Options:
    - H/C/N
    - H/C/D
    - H/../..

Applications

  • Solid Peptide & Proteins
  • Typically wet/salty samples
  • Optimized to avoid RF heating

Requirements

  • 300W 1H /500W X /500W Y
  • HP Pre-amps

Accessories

  • Rotors, Caps
  • (Disposable) Inserts
  • MAS eject tube
  • BCU-X down to -60oC

Efree Static Probes

Features

  • Available for 500-950 MHz
  • Double/Triple Resonance
  • 7 x 5.5 or 7 x 3 mm flat coil
  • 5 mm solenoid
  • 31P to check alignment
  • Frequency Options:
    - H/N
    - H/C/N
    - H/C/D
    - H/F/C
    - H/../.. 

Applications

  • Aligned Crystals
  • Proteins aligned on glass plates
    - ‘flat’-coil
  • Proteins in Bicelles
    - solenoid

Requirements

  • 300W 1H /500W X / 500W Y
  • HP Pre-amps

Accessories

  • Sample Cells
  • BCU-X down to -60oC