The Spicer Magnetic Field Cancellation System provides cost-effective, maintenance-free environmental magnetic field shielding solutions for high resolution EM (Electron Microscope) instrumentation. They are the highest-performance commercial magnetic field compensation equipment available for protecting sensitive EM instruments from AC/DC environmental magnetic fields.


There are two models available (SC-22 and SC-24) for different isolation requirements. The SC-22 is intended for cancelling AC fields only, while the SC24 is intended for cancelling AC and DC fields. Both systems offer protection against fluctuations in magnetic fields caused by:

  • Subways
  • Electrical Distribution Equipment
  • Elevators
  • Moving Vehicles

SC22 Product Highlights

SC22 AC Sensor
SC22 AC Sensor
  • Low cost, high performance system
  • Automated set up with an intelligent user interface
  • Cancels AC fields from 2.5 Hz to 5 kHz, 50 x field improvement at 60 Hz
  • Full 3 axis (X, Y, Z) system, Up to 60 mG (6.0 μT) pk-pk range
  • Adapts to field changes within 100 μs
  • Supports dual sensors for TEMs and high gradient fields

SC24 Product Highlights

SC24 DC and AC Sensor
SC24 DC and AC Sensor
  • Use AC sensors for cancelling 50/ 60 Hz AC line fields or DC sensors for cancelling tram and train DC fields and 50/60Hz
  • Simultaneous AC & DC field display with choice of Tesla or Gauss units
  • Mixes dual sensors to create virtual sensor “inside” the EM column
  • Adapts to field changes within 100 μs
  • Touch screen intelligent user interface with automatic setup and DC reset
  • Ethernet and USB ports for remote operation and monitoring
  • Built-in test field generator


Double Loop Room Cables
TEM Room with Double Loop Cables

The Spicer System broadens the available installation locations for electron microscopes by allowing them to be placed in locations where varying high magnetic fields are present. As a result, they can be installed at sites previously rejected due to magnetic field interference.

Common applications include:

  • Scanning Electron Microscopes
  • Transmission Electron Microscopes
  • MRI Machines
  • And more!


Magnetic Field Cancelling Performance of the SC24 System


For further clarification, please contact us!