Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 674259 Halfenprox, 10mg Price on request 2410.11-K-IPX5 4-n-Pentyl-d11-phenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 1219805-30-7 Price on request S-4485-500-AC EPA 527, Internal Standard 3 Analytes, each 500µg/mL in Acetone; unit: 1x1mL 1524.12 Acenaphthene-d10 [15067-26-2] 0389.14 Phenanthrene-d10 [1517-22-2] 1024.18 Chrysene-d12 [19-03-5] Price on request