
MPI Accessories & Consumables
W-FI field indicators, W-PT pull test bars, QQIs, test pieces, powder bulbs, UV lamps and inspection media.

Western stocks the monitoring accessories an MPI procedure calls for. W-FI field indicators read in gauss in ±10, ±20, ±50 and ±100 gauss ranges, each calibrated during manufacture in a Helmholtz coil — the W-FI-10 for checking demagnetisation and the higher ranges for residual fields. W-PT pull test bars verify yoke lift, are traceable to NIST and come with a certificate of compliance to ASTM E1444, ASTM E709 and ASME Section V, Article 7, with a pole-spacing scale on the side. QQIs, the MTU Test Piece No. 3, the Ketos ring and the Berthold gauge check field strength, direction and bath sensitivity, W-CT centrifuge tubes check bath concentration to ASTM requirements, and W-CC fluorescent crack comparators measure indication length under UV-A light.
For applying and viewing the media there are the silicone-rubber W-PB-4 powder bulb, the SPR-365 LED UV inspection kit and the W-PPS portable power supply, which runs a standard AC yoke for over 1½ hours continuously where mains power is not available. Western packages dry magnetic powder in four colours, in containers from 400 g to 22.7 kg, and supplies Sherwin wet method media including Glo-Netic fluorescent bath, Black Oxide No. 1, white contrast paint and cleaner/remover. Its mobile inspection booths can be configured as a temporary wet fluorescent station with hoods, bath recirculation and UV and white lights.
- W-FI indicators: ±10, ±20, ±50 and ±100 gauss
- W-PT pull test bars traceable to NIST
- QQIs manufactured to AMS specification
- Centrifuge tubes to ASTM requirements
- Dry powder in white/grey, blue/black, red and yellow
- W-PPS portable power supply in 115 V and 230 V versions
- Yoke lift verification
- Residual field and demagnetisation checks
- Wet bath concentration and sensitivity checks
- Setting up and verifying MPI procedures
Explore other Western Instruments product lines

Magnetic Particle Inspection Yokes
W-Series AC, AC/DC, cordless and permanent-magnet yokes, from the WC-6 and WE-3 to the WC-9 and WM-5.
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Magnetic Particle Inspection Coils
WA, WS, WP and WD Series magnetising and demagnetising coils, designed and built in Alberta.
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Portable MPI Inspection Kits
Dry, wet visible and wet fluorescent yoke kits — W-WF, W-WM, W-CDM, W-DM and more — in custom carrying cases.
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Lever Pit Gauges
Tri-Gauge and Jr. Tri-Gauge pocket gauges for pit depth, weld undercut and weld crown height.
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