Specific gravity result: Color (APHA) result: Water result: This exercise is to highlight what we mean by operational definition. For example, specific gravity would have X result, and color (APHA) would have Y result. Using the certificate of analysis shown below, complete the operational definition questions that follow the chart. CERTIFICATE OF ANALYSIS (COA) PROPYLENE GLYCOL REAGENT ACS & USP/NF GRADE KOSHER Test Monograph Specification Result Assay (on anhydrous basis) ACS NLT 99.5% 99.99% USP Identification A-infrared USP Conforms to reference spectrum Pass absorption Identification B-Limit of USP Diethylene glycol Diethylene glycol, NMT 0.1% max