Selenium (Se) Back Catalog number: 58034 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82492 EPA Method 8240A Mix #2 Price on request 9282.28-100-ME Sildenafil citrate,100 µg base/mL,MeOH,1mL Price on request 72994 Epoxiconazole, 1000μg/ml in MeOH, 1ml Price on request