EPA Method 507 - Internal Standard Back Catalog number: 19031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4502-25IO-KIT 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 9414.18-5MG Mianserin-d3 hydrochloride (methyl-d3), neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 1219804-97-3 Price on request 673371 Mandipropamid, 100 µg/ml, Acetonitrile, 5ml Price on request