Spiking Standard #2 Back Catalog number: 53070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675167 Ethidimuron, 10 µg/ml, Acetonitrile, 10ml Price on request 57234 Selenium (Se) Price on request 0158.15-500-IO 2,4,7-Trimethyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 216983-03-8 Price on request