Strontium (Sr) Back Catalog number: 58138 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2517.8-100-ME Caffeine,100 µg/mL,MeOH,1mL, Price on request MFBET 2-Perfluorobutyl-[1,1,2,2-2H4]-ethanol (4:2), 1.2ml x 50ug/ml, methanol Price on request 55203 Ammonium- Nitrate-Nitrite in brine Price on request