EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 21056 CLP Acid & Base/Neutral Surrogate Mix Price on request 3298.23-K-IO Methyl 13-cis,16-cis-docosadienoate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 61012-47-3 Price on request 8969.39-100-ME 3-Chloro-1,2-propandiol-distearate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request