Phthalic anhydride Back Catalog number: 70431 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4368-200-5DC EPA 528 rev. 1.0 Internal Standard Solution 2 200µg/mL in dichloromethane; unit: 1x5mL 2081.6 2,3,4,5-Tetrachlorophenol [4901-51-3] Price on request C10303000 L-(+)-Ascorbic acid, certified, 0.25g Price on request 95109 PAH Standard Price on request