Acetone should not be used on safety goggles because...

Acetone should not be used on safety goggles because...

• A. It cleans the lens better
• B. It smells pleasant
• C. It leaves a residue that improves clarity
• D. It destroys the lens

Answer: (D)

Safety goggles rely on lens materials that must stay clear and strong to protect your eyes. Many goggles use polycarbonate lenses, sometimes with coatings for scratch resistance or anti-fog. Acetone is a very strong solvent that can interact with these plastics by softening, swelling, or dissolving them and by stripping coatings. When the lens material is damaged, its strength and optical clarity degrade, creating micro-cracks, haziness, or fogging and reducing eye protection. Damaged coatings can also wear away, leaving the surface easier to scratch or fog. Because the goal is reliable protection, cleaners should be compatible with the lens material and coatings, usually mild soap and water or manufacturer-approved products. The idea that acetone cleans better or leaves a beneficial residue isn’t accurate; the real issue is chemical damage to the lens.

Safety goggles rely on lens materials that must stay clear and strong to protect your eyes. Many goggles use polycarbonate lenses, sometimes with coatings for scratch resistance or anti-fog. Acetone is a very strong solvent that can interact with these plastics by softening, swelling, or dissolving them and by stripping coatings. When the lens material is damaged, its strength and optical clarity degrade, creating micro-cracks, haziness, or fogging and reducing eye protection. Damaged coatings can also wear away, leaving the surface easier to scratch or fog. Because the goal is reliable protection, cleaners should be compatible with the lens material and coatings, usually mild soap and water or manufacturer-approved products. The idea that acetone cleans better or leaves a beneficial residue isn’t accurate; the real issue is chemical damage to the lens.