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VARIAN EM 360A H1 Observe Spectrometer
(Permanent Magnet)


  • Easy-to-use and Low Cost instrument.
  • Ideal for routine analyses or educational purpose.
  • Magnet with four wheels, Easy-to-move!
  • Resolution 0.5 Hz
  • Sensitivity 25:1
  • Magnet with temperature compensation to ensure field stability.
  • Wide range of sweeps (0.5 to 20 ppm).
  • 11 x 17-inch Y-T flatbed recorder.
  • Pneumatic sample handling.
  • Quick normalization of spectrum and integral amplitudes.
  • 14-KG permanent magnet (needs no cooling water).
  • Kit shipped with instrument (see list below).


Observable Nuclei Hydrogen (Proton) Standard
H0 Field Strength 14.092 kG
H1 Rotating Field Frequency 60.0 MHz (for proton resonance)
Sample Size 5-mm O.D
Typical Sample Volume 0.4 mL
Resolution (Use ODCB 7th or 14th line). Under optimum homogeneity conditions, the full linewidth at half amplitude with a spinning sample is 0.5 Hz or better
Resolution Stability 0.6 Hz degradation/8 hrs without Autoshim control
Sensitivity Proton: sufficient to detect the average of the two peaks in the quartet of a 1% ethylbenzene sample with a S/N of 25:1 homogeneity, filter, and H1 conditions prevailing
Spinning Side Bands 2.5% or less than the center or main line peak height (measured at 50 rps)
Integration Reproducibility Using 5% ethylbenzene sample for five successive scans of the spectrum, the average deviation in total integral reproducibility should not exceed 2 %
System Stability (Short Term Field Stability)

Unlocked: 1 Hz /5 minutes at constant temperature

Average RF Field at Sample 0.005 to 0.5 milligauss, continuously variable
Field Offset Range -4 to +16 ppm, switch selectable in 1 or 2 ppm increments; also continuous 10 ppm (fine) and 40 ppm (coarse) controls
Modulation Frequency 10 kHz
Filter Time Constants 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, and 5 seconds, plus open position
Recorder and Sweep Unit Y axis Response: < 750 msec full scale
Linearity: 0.35%
Chart Size: 28cm x 42 cm (11''x16.5'')
Chart Calibration Accuracy:
1Hz at 600 Hz sweep width
Sweep Times 0.5, 1, 2, 5, 10, 20 min
Sweep Ranges 0.5, 1, 2, 5, 10, 20 PPM
End Of Sweep -4/+16 PPM
Ambient Temperature Range 18 C to 32 C with maximum variation of 3 C change over 24 hrs
Protection Fuse 1.5 A at 250 V
2.0 A at 115 V
Power Supply Line Voltage:        115 or 220 V, 50 or 60 Hz
Power:                 200 watts maximum (excluding air supply)
System Weight Magnet Gross Weight: 270 kg (600 pounds)
Gross Weight
: 27 kg (60 pounds)
Dimensions Magnet: 28x30x31 inches (DxWxH) / (70x76x78 cm)
Control Console: 24.3x37x38 inches /
(62x94x96 cm) (including stand)

ACCESSORIES (Upon Request)

  • External Lock/spin decoupler accessory for double resonance.
  • AIR Pump
Original compressor + filter. Regulator, pressure indicator, muffler + fittings.
  • Kit coming with instrument
2 pen groommet & 1 pen holder
1 Anamag. Shim screwdriver
1 turbine 5mm
1 Manual Spectrometer System
100Sh. Chart Paper

 CONTACT FOR FREE  INFO AND QUOTATIONS: admin@labusednmr.com and/or rbpnmr@libero.it
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