Metals Standard Back Catalog number: 59617 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0452.3-150-CY GC-IRMS Standards (C15 (?13C: -30.22); C20 (?13C: -33.06); C25 (?13C: -28.21)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. Price on request 57405 Boron (B) Price on request 3902.40-5MG Astaxanthin, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 472-61-7 Price on request