• RED PENETRANT RED PENETRANT PFINDER 860 is a direct water-washable color contrast penetrant (red) of the sensitivity level 2 for crack detection of surfaces. Due to its user-friendly rinsability PFINDER 860 provides low residual background even on rough metal surfaces. PFINDER 860 is qualified for penetrant testing at temperatures between -20°C to +100°C (temperature of work part) according to EN ISO 3452-5 and EN ISO 3452-6. Penetrant type II according EN 571-1.