What is a test panel used for?

What is a test panel used for?

• A. Measuring film thickness
• B. Checking color match and spray pattern
• C. Evaluating adhesion to primer
• D. Assessing drying time

Answer: (B)

Test panels are small samples you paint to preview how the finish will look on the real vehicle. They let you verify color match against the target shade and judge how the paint lays down—this includes the spray pattern, coverage, and texture—so you can adjust the color formulation, gun settings, and technique before applying to the actual panels. This helps ensure a uniform, correct appearance across the job.

Other tasks aren’t the primary purpose of a test panel. Measuring film thickness uses a dedicated gauge, not a panel you test for appearance. Evaluating adhesion to primer is done with adhesion tests, and drying time is determined by cure times and environmental conditions rather than a color/appearance check on a panel.