| 摘要 |
An improvement in the water-washable inspection penetrant process wherein a "stabilized" background-producing water-washable inspection penetrant is employed and the water-wash step is modified to include a brief spray-wash with water, application of an accelerator rinse of a low energy detergent solution, and a final water rinse, whereby background indications of shallow surface discontinuities are selectively removed to a controlled degree.
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