Instruments & RegulatoryCâu 82 / 100
The FDA drop-ball test for impact resistance drops what onto the lens?
a.A rubber mallet
b.A metal rod
c.A hammer
d.A 5/8-inch steel ball from 50 inches
Giải thích
The drop-ball test drops a 5/8-inch (15.9 mm) steel ball weighing about 16 grams from a height of 50 inches onto the lens; the lens must not fracture to demonstrate impact resistance.
Trích dẫn luật: FDA impact resistanceLuyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
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