MET-L-CHEK MET-L-CHEK-D-70 (16-OZ-AEROSOL)

Met-L-Chek® D-70 Non-Aqueous Developer

Overview

Met-L-Chek® D-70 is a non-aqueous developer used in liquid penetrant inspection (LPI) and nondestructive testing (NDT) applications. Designed for use with both fluorescent and visible penetrant systems, it is applied after excess penetrant removal and surface drying to enhance flaw indications by providing a uniform white background. D-70 is widely used throughout aerospace, automotive manufacturing, weld inspection, leak detection, and precision inspection industries.

Key Technical Characteristics

• Product Type: Non-aqueous developer (NAD)
• NDT Classification:
  • Type 1 - Fluorescent Penetrant Systems
  • Type 2 - Visible Penetrant Systems
• Inspection Methods:
  • Type 1: Methods A, B, C & D
  • Type 2: Methods A, B & C
• Developer Form:
  • Type 1: Form d
  • Type 2: Form e
• Appearance: Milky liquid, clear after standing with white sediment
• Dry Coating: Smooth white finish
• Fluorescence: None
• Available Packaging:
  • 400 mL Aerosol
  • 1 Gallon (3.7 L)
  • 5 Gallon (18.9 L)
  • 55 Gallon (208 L)

Core Performance Benefits

• Enhances visibility of penetrant indications during inspection
• Provides a uniform white background for improved defect detection
• Compatible with both fluorescent and visible dye penetrant systems
• Supports high-sensitivity inspection processes
• Suitable for a broad range of aerospace and industrial NDT applications
• Produces smooth, consistent developer coatings
• Applicable to multiple penetrant processing methods

Typical Applications

• Aerospace component inspection
• Aircraft maintenance and overhaul programs
• Weld inspection and quality assurance
• Automotive manufacturing inspection
• 3D laser scanning preparation
• Through-leak detection testing
• Industrial nondestructive testing (NDT)
• Manufacturing quality control operations

Material Engineering & Design Features

Met-L-Chek® D-70 is formulated to create a highly uniform, smooth white developer layer that improves the contrast and visibility of penetrant indications. The developer assists in drawing penetrant trapped within discontinuities back to the surface, making defects easier to identify during inspection.

The product is qualified to numerous aerospace, military, and industrial specifications, including:

• AMS 2644
• AMS 2647
• ASTM E-165
• ASTM E-1417
• ASTM E-1418
• ASTM E-1209
• ASME Boiler & Pressure Vessel Code Section V
• ISO 3452-2
• MIL-STD-2132
• BAC 20-20-02
• BAC 5423
• BSS 7039
• NAVSEA 250-1500-1

Installation & Handling

• Apply after excess penetrant removal and surface drying
• Use in accordance with approved liquid penetrant inspection procedures
• Compatible with fluorescent and visible penetrant systems
• Follow applicable NDT processing method requirements
• Consult detailed processing guides before use
• Review Safety Data Sheet (SDS) prior to handling and application

Environmental & Compliance Notes

• Designed for professional nondestructive testing applications
• Complies with numerous aerospace, military, and industrial inspection standards
• Refer to product SDS for complete safety and handling requirements
• Use only as part of approved inspection procedures
• Suitable for commercial aerospace and industrial quality assurance programs

Key Advantages

• Improves defect visibility and inspection reliability
• Compatible with a wide range of penetrant inspection methods
• Approved to major aerospace and military specifications
• Provides consistent white background contrast
• Supports high-sensitivity NDT inspection programs
• Available in aerosol and bulk packaging formats
• Widely used across aerospace, automotive, and industrial sectors