Lumor® J Powder consists of finely divided fluorescent magnetic particles which will fluoresce
brilliant yellow-green under ultraviolet radiation with a predominant wavelength of 365 nm.
The particles have been selected for their high magnetic response, low coercivity (to avoid
coagulation) and prolonged operational life.
Lumor® J Powder is used for the high-sensitivity detection of surface or near surface defects
in ferro-magnetic materials.
Method of Use :
Heavy deposits of grease, rust, scale and paint should be removed prior to use. The surface
of the components to be inspected should be cleaned prior to testing as any contamination
on the component can mask indications and contaminate the magnetic particle ink.
Components are magnetized using the appropriate technique, whilst Lumor® J Powder ink is
applied during magnetization. Application of the ink must be stopped before the magnetizing
source is switched off to enable the particles to migrate to the area of flux leakage. Application
of the prepared Lumor® J Powder may be by spray, flow-on or immersion.
The component surfaces should be inspected under UVA (black) light of minimum output of
1000 µW/cm² and peak wavelength of 365 nm. The ambient light should also be less than 10
lux.
Note: Specification may vary. Check concentration and UVA/ambient light as per the
applicable specification.
