What is the ANSI drop-ball test specification for industrial safety lenses?

• A. Lenses designed for safety wear must withstand the impact of a 1-inch steel ball dropped from a height of 50 inches.
• B. Lenses designed for safety wear must withstand the impact of a 1-inch steel ball dropped from a height of 60 inches.
• C. Lenses designed for safety wear must withstand the impact of a 5/8-inch steel ball dropped from a height of 50 inches.
• D. Lenses designed for safety wear must withstand the impact of a 1/2-inch steel ball dropped from 40 inches.

Answer: (B)

The test evaluates how well industrial safety lenses resist impact by simulating a real-world hit with a steel ball. The ANSI specification uses a 1-inch diameter steel ball dropped from a height of 60 inches onto a mounted lens. The goal is for the lens to stop the ball and remain intact without cracking or allowing penetration, with the frame helping to contain the impact. This specific combination of ball size and drop height defines the energy the eyewear must withstand to meet industrial safety requirements. The other options describe different ball sizes or heights that do not match this standard impact level.