EPA Method 531.1 Individual Analytes Back Catalog number: 31241 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4502-0-25IO Phosphorous Standards, Blank 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 MTPP 13C18-Triphenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request 12060.22-100-ME Canrenone,100 µg/mL,MeOH,1mL Price on request