What safety measures are required when handling concentrated acids and bases in the lab?

• A. Wear basic PPE, work in open air, add water to acid.
• B. Use appropriate PPE; work under a fume hood; add acid to water; store corrosives properly; maintain spill kits and eyewash/shower readiness.
• C. Use no PPE and handle as needed.
• D. Only wear gloves; no goggles.

Answer: (B)

Handling concentrated acids and bases safely requires combining protective gear, containment, proper handling techniques, and emergency readiness. Use appropriate PPE—chemical-resistant gloves, splash goggles or a face shield, and a lab coat or apron. Work under a fume hood to contain fumes and reduce inhalation risk. When diluting, always add acid to water slowly with stirring, never the other way around, to minimize heat and splatter. Store corrosives in clearly labeled, compatible containers and cabinets away from incompatible chemicals. Keep spill kits and eyewash/shower stations accessible and maintained so you can respond quickly to exposures.