Silicon (Si), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57014 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 9073.8-K-IP 5-Chlorovanillin, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 19463-48-0 Price on request 71460 2-Ethylanthracene Price on request 11705.12-100-IO 2,3',4',5'-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request