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CALLINGTON Sherwin Solvent Removable Visible Penetrant DP-40 (Step 1)
DUBL-CHEK DP-40 is a solvent removable, post emulsifiable visible penetrant and used to locate cracks, laps, pores, lack of bonding, and similar surface discontinuities. DP-40 can be used on nonporous parts including both ferrous and nenferrous metals, ceramics, and glass.
CALLINGTON Sherwin Cleaner/ Remover DR-60 (Step 2)
DUBL-CHEK DR-60 Cleaner/ Remover can be used in the penetrant process to remove excess penetrant from part surfaces. In the penetrant process it is a manual wipe on and wipe off material and is recommended for small area. DR-60 may also be used for generally cleaning oily, dirty surfaces. It is especially suitable for cleaning prior to the application of inspection penetrants. Complies with low sulfur and low halogen requirements.
CALLINGTON Sherwin Non-Aqueous Developer D-100 (Step 3)
DUBL-CHEK D-100 developer consists of refined white particles suspended in isopropyl alcohol that produces enhanced sensitivity for locating tight flaws. D-100 developer pulls flaw- entrapped penetrant to the part surface and creates a constrasting vivid white background. Complies with low sulfur and low halogen requirements.
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