Selenium (Se) Back Catalog number: 57834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676231 Chlorfenvinphos, 100 µg/ml, Cyclohexane, 1ml Price on request S-4502-2.5K-25IO Phosphorous Standards Phosphorus in Isooctane Tri-n-butylphosphate, 99+% (Chiron product nr. 1399.19) CAS [126-73-8] Matrix: Isooctane , 20cSt Units: 1x25mL, 1x100mL Isooctane Price on request 9365.14-K-IO Di-n-propyl phthalate-3,4,5,6-d4,1000 µg/mL,isooctane,1mL Price on request