EPA Method 527 Surrogate Standard Back Catalog number: 95053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8632.31-10UG 2ß,17 alpha(H),21ß(H)-2-Methylhopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 138057-81-5 Price on request M293050 Methyl 12-Hydroxystearate, 1g Price on request 10343.20-K-ME Amitriptyline-d3 hydrochloride (N-methyl-d3), 1000µg/ml in MeOH, 1ml Price on request