ASTM B368 Proficiency Testing Program – 550200

ASTM B368 CASS testing uses a more aggressive corrosive environment than conventional neutral salt spray and depends on consistent control of the test solution, exposure conditions, specimen handling, and subsequent evaluation. Auto Technology’s ASTM B368 CASS Proficiency Testing Program #550200 gives laboratories an independent comparison of the mass-loss results their process produces.

The program is intended for laboratories performing Copper-Accelerated Acetic Acid-Salt Spray testing that need external proficiency-testing evidence or want a practical way to monitor laboratory performance over time.

What the CASS Proficiency Test Tells You

The program directly evaluates the mass-loss results submitted by your laboratory. Those results provide an external check that goes beyond reviewing chamber settings, calibration records, or internal quality-control information alone.

If your result produces a warning or action signal, the result can support a deeper review of the test process. Potential areas for investigation can include chamber operation, solution preparation, exposure conditions, specimen handling, cleaning, measurement, and calculations. The PT result itself does not separately determine which factor caused the difference.

Who Uses ASTM B368 Proficiency Testing?

• Corrosion and metallurgical laboratories performing CASS testing
• Plating and finishing laboratories
• Manufacturers evaluating metallic and decorative coating systems
• Accredited laboratories with applicable proficiency-testing requirements
• Laboratories evaluating a technician, chamber, or transferred test process
• Quality teams investigating inconsistent corrosion-test results

ASTM B368 PT Process

1. Receive standardized test coupons with the applicable program instructions and reporting form.
2. Review ASTM B368 and the PT instructions before beginning the exposure.
3. Perform the CASS exposure and complete the required coupon handling and evaluation.
4. Submit the requested results and supporting test information.
5. Receive the applicable confidential statistical report comparing your results with the proficiency-testing data.

Check More Than Your CASS Chamber Setpoints

Use ASTM B368 Program 550200 to obtain an independent statistical comparison of the corrosion results produced by your laboratory’s CASS testing process.