Initial Check Verif. Standard 4, in 4%HNO3, 100ml Back Catalog number: ICV-4-100 Availability: In the manufacturer's stock Price on request - + Recommended 1594.16-100-IO 4-Hydroxy-5,6,6a,11a-tetrahydro-11H-benzo[a]carbazole, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request RS650 Redox Standard 650mV @25°C, 500ml Price on request 52420 EPA Method 300.0 Anions Price on request