Met-L-Chek FP-97A(M) Level 4: Ultra-High Sensitivity Fluorescent Penetrant

The Met-L-Chek FP-97A(M) Level 4 is an industry-leading, post-emulsifiable fluorescent penetrant designed for the most critical, ultra-high-sensitivity Non-Destructive Testing (NDT) applications, such as those found in aerospace, nuclear, and high-performance military components. Supplied in a 1-Gallon (3.7L) container, this material is ideal for precision inspection stations, small-batch processing, or tank top-offs where maximum sensitivity is paramount.

FP-97A(M) is a Type 1 (Fluorescent), Sensitivity Level 4 penetrant, offering the highest available sensitivity for detecting the smallest, most minute surface discontinuities like tight fatigue cracks, micro-porosity, and shallow defects in safety-critical components.¹As a Post-Emulsifiable (PE) penetrant, it offers superior process control by requiring a separate emulsifier (Methods B, C, or D) for controlled removal, virtually eliminating the risk of over-washing and ensuring maximum flaw detection reliability on smooth surfaces.²

🔑 Key Selling Features

• Ultra-High Sensitivity (Level 4): Provides the highest possible level of flaw detection capability to find the smallest, most critical discontinuities often missed by Level 2 or 3 penetrants.

• Maximum Process Control: Its Post-Emulsifiable nature requires a separate emulsifier (³$\text{Methods B, C, \& D}$ compatible), ensuring precise removal control that is essential for Level 4 sensitivity.⁴

• Superior Brightness: The unique formula delivers an extremely bright, high-contrast, yellow-green fluorescent indication, improving inspector reliability and speed under UV-A light.

• Aerospace & Industry Approved: Meets the most stringent global specifications for critical applications, including:

  • AMS-2644 (QPL Listed as Level 4)⁵

  • AMS-2647, ASME B&PV Code Section V, ASTM E-1417⁶

  • Specific approvals from major primes like Pratt & Whitney, GE, and Rolls-Royce.

• Alloy Safety Assured: Features extremely low levels of Sulfur, Halogens, and Sodium (⁷$\text{<} 100 \text{ ppm}$), guaranteeing safety for inspection of all metal surfaces, including the most sensitive aerospace alloys (Titanium, Nickel-based superalloys) without the risk of high-temperature corrosion.⁸