EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90396 Internal Standard Price on request 10277.18-5MG (±)-Bisoprolol-d7 Hemifumarate (iso-propyl-d7) Price on request 0407.28-150-CYX5 n-Octacosane, ?13C: -29.85, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 630-02-4 Price on request