525 Internal Standard Back Catalog number: 94212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10545.34-1G Direct Black 38 Price on request 98747 UCMR4 - Method 525.3 - Surrogate Mix Price on request 11505.2-1ML 1,1,1-Trichloroethane (stabilized with 5% 1,4-dioxane), 93.5%, in ampoule,neat,neat,1mL, Price on request