Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1240.7-K-ME n-Heptane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 142-82-5 Price on request 8700.17-100-CY Bromopropylate Price on request 79245 EPA Method 8330 Analyte Price on request