EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9280.16-K-ME DL-Propranolol hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 318-98-9 Price on request ACQ-WH11-015 Ethanol standard in whole blood,1.1g/L,whole blood, 1.5mL Price on request 0693.29-100-IO 28-Norlup-16(17)-ene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 53767-47-8 Price on request