Magnetic Particle Inspection (MPI) Equipment

Test Weights

Yoke Test WeightS

Calibrated NDT Lift Test Weight

Johnson & Allen manufacture a range of calibrated test weights for use with permanent magnets and electro magnets. Lift tests are one of the easiest ways to verify the magnetic field strength generated by MPI equipment and to check for standard compliance.

All test weights include a heavy duty lifting handle and are supplied with relevant certification traceable to national standards.

Versions Available

4.5 kg

AC Yokes

ISO 9934-3: 2015

13.5 kg

DC Yokes - 50 to 100mm pole spacing ASTM 709E

18 kg

DC Yokes / Permanent Magnets


22.5 kg

DC Yokes - 100 to 150mm pole spacing ASTM-E1444-16*

23.0 kg

DC Yokes - 100 to 150mm pole spacing ASTM 709E

*Note that yokes were removed from the later revision of this standard in ASTM-E1444-21

For specialist applications Johnson & Allen can also manufacture bespoke calibrated test weights - Contact our head office for more details.

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