EPA Method 525 Spike B Back Catalog number: 92313 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9360.19-K-IO iso-Butyl benzyl phthalate (2-Methylpropyl benzyl phthalate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 72170-45-7 Price on request S-4502-10K-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 C559752-5MG Clarithromycin-N-methyl-d3, 5mg Price on request