EPA Method 551.1 Performance Check Soln Back Catalog number: 30104 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12159.41-12.4-MX Nodularin-R,12.4 µmol/L,water:MeOH=1:1,1mL, Price on request B2TBPPP Bis(2-tert-butylphenyl) phenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request 71697 Imidacloprid, 1000µg/ml in MeOH, 1ml Price on request