Which statement best describes Analytic Reagent (AR) grade?

• A. Used only for cleaning tasks
• B. Always more expensive than ultrapure
• C. Recommended for qualitative and quantitative analysis
• D. Not suitable for analytical work

Answer: (C)

Analytic Reagent grade is chosen for analytical measurements where impurities could affect results. Because its purity is sufficient for most analytical needs, it supports both qualitative analyses (what’s present) and quantitative analyses (how much is present). This grade offers reliable performance for common procedures like titrations, spectroscopic measurements, and chromatography prep without the higher cost of the purest grades, while still avoiding contaminants that would interfere with analysis. It’s not limited to cleaning tasks, and ultrapure reagents, while purer, are typically more expensive and used when trace impurities must be minimized to an extreme degree.