Fluorescent Penetrant MET-L-CHEK FP-922 – Sensitivity 2 – Penetrant with broad application spectrum, approved for high sensitivity aerospace applications by Boeing BSS 7039 & BAC 20-20-0, Pratt & Whitney FPM PMC #4353 AG, General Electric Aircraft Engines 70-32-02 & Gas Turbines LM6000 PC 11, RollsRoyce RPS-702-7.