PENETRANT FOR COLOR CAPILLARY DEFECTOSCOPY Russian patent published in 2004 - IPC

FIELD: special-destination fluids.

SUBSTANCE: penetrant is composed of 3-5% of mixture of diazo-containing red dye and containing no diazo group blue dye, 10-40% of nonionic surfactant (neonol or syntanol), and solvent (in balancing amount), wherein weight ratio of blue to red dye is 1:(5-6). Such composition of penetrant assures its reduced volatility and fire danger as well as high sensitivity allowing revealing minimum defect with opening width 1-2 mcm.

EFFECT: increased reliability and stability in controlling objects under restoration and application conditions.

4 cl, 1 tbl