Multi-Element Internal Std., 10ug/ml, 4x25ml Back Catalog number: 52319 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 1309.28-K-IO n-Octacosane-d58, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16416-33-4 Price on request 79640 Bifenthrin Price on request 8850.9-K-IO 3-iso-Butyl-2-methoxypyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request