Internal & Surrogate Standard 8260B Back Catalog number: 92026 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9472.9-100-ME Levetirazetam-d6, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 72408 Butyric acid Price on request 79055 Cypermethrin Price on request