ECCN 6A006

NSAT

Magnetometers, magnetic gradiometers, intrinsic magnetic gradiometers, underwater electric field sensors, compensation systems, and specially designed components therefor, as follows .

Category: 6 - Sensors & LasersProduct Group: A - EquipmentLast Updated: 2026-04-10

What This ECCN Covers

ECCN 6A006 controls magnetometers, magnetic and intrinsic gradiometers, underwater electric-field sensors, and "compensation systems" meeting specified sensitivity criteria — including instruments using superconducting (SQUID), optically pumped, or nuclear-precession techniques. High-sensitivity magnetic sensing is controlled for National Security and Anti-Terrorism reasons because of its role in submarine and submerged-object detection.

Who needs to check this?

Makers of geophysical survey instruments, magnetic-anomaly detection systems, and high-sensitivity magnetometers or gradiometers for marine or airborne use.

Compliance tip

Sensitivity (noise floor) and sensor type are the controlling parameters — confirm your instrument's specification against the entry, as less sensitive survey instruments may fall outside. Because anti-submarine-warfare end use is a concern, apply Part 744 end-use diligence and verify the License Exception paragraph.

Reviewed by Jack Tan · Last reviewed: Jun 4, 2026

Items Covered

  • a."Magnetometers" and subsystems, as follows:
  • 1. "Magnetometers" using "superconductive" (SQUID) "technology" and having any of the following:
  • 1.a. SQUID systems designed for stationary operation, without specially designed subsystems designed to reduce in-motion noise, and having a 'sensitivity' equal to or lower (better) than 50 fT (rms) per square root Hz at a frequency of 1 Hz; or
  • 1.b. SQUID systems having an in-motion-magnetometer 'sensitivity' lower (better) than 20 pT (rms) per square root Hz at a frequency of 1 Hz and specially designed to reduce in-motion noise;
  • 2. "Magnetometers" using optically pumped or nuclear precession (proton/Overhauser) "technology" having a 'sensitivity' lower (better) than 20 pT (rms) per square root Hz at a frequency of 1 Hz;
  • 3. "Magnetometers" using fluxgate "technology" having a 'sensitivity' equal to or lower (better) than 10 pT (rms) per square root Hz at a frequency of 1 Hz;
  • 4. Induction coil "magnetometers" having a 'sensitivity' lower (better) than any of the following:
  • 4.a. 0.05 nT (rms)/square root Hz at frequencies of less than 1 Hz;
  • 4.b. 1 × 10−3 nT (rms)/square root Hz at frequencies of 1 Hz or more but not exceeding 10 Hz; or
  • 4.c. 1 × 10−4 nT (rms)/square root Hz at frequencies exceeding 10 Hz;
  • 5. Fiber optic "magnetometers" having a 'sensitivity' lower (better) than 1 nT (rms) per square root Hz;
  • b.Underwater electric field sensors having a 'sensitivity' lower (better) than 8 nanovolt per meter per square root Hz when measured at 1 Hz;
  • c."Magnetic gradiometers" as follows:
  • 1. "Magnetic gradiometers" using multiple "magnetometers" controlled by 6A006.a;
  • 2. Fiber optic "intrinsic magnetic gradiometers" having a magnetic gradient field 'sensitivity' lower (better) than 0.3 nT/m (rms) per square root Hz;
  • 3. "Intrinsic magnetic gradiometers", using "technology" other than fiber-optic "technology", having a magnetic gradient field 'sensitivity' lower (better) than 0.015 nT/m (rms) per square root Hz;
  • d."Compensation systems" for magnetic and underwater electric field sensors resulting in a performance equal to or better than the control parameters of 6A006.a, 6A006.b, and 6A006.c; and
  • e.Underwater electromagnetic receivers incorporating magnetic field sensors specified by 6A006.a or underwater electric field sensors specified by 6A006.b.

Control Reasons

NSNational Security

Items controlled for national security reasons under multilateral export control regimes.

Column 1: YesColumn 2: No
ATAnti-Terrorism

Items controlled for anti-terrorism reasons. Most items on the CCL have AT controls.

Column 1: YesColumn 2: No

Disclaimer

This information is for reference only. For official classifications, consult BIS or a qualified export control professional.

Official Reference

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