Nifursol, certified, 0.1g Back Catalog number: C15523100 Availability: In the manufacturer's stock Price on request - + Recommended EPA-533PAR EPA Method 533 Native Primary Std. (br/linear mix), 500ng/ml in MeOH, 1,2ml Price on request E4009-5G Eosin Y, Dye content ~99 %, 5g Price on request 19097 EPA Method 602 - Surrogate Standard Price on request