Magnaflux Spotcheck® Penetrants - SKL-SP2, Solvent Removable Penetrant, 300Gram, Aerosol Can, Model:NP701. Should be used at temperatures between 40°F-125°F. Can be used over the entire spectrum of industrial applications, where a visible penetrant inspection system meets the requirements for surface-open flaw detection. Has also been successfully used on non-porous ceramics and similar materials.