Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-1668IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 96884 EPA Method 539Mix #1, 100µg/ml in MeOH, 1ml Price on request 0060.20-50-T 3-Hydroxybenzo[a]pyrene, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 13345-21-6 Price on request 54190 Sodium Formate (CHO2-) Price on request