EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92314 EPA Method 525 Spike C Price on request A16995100AL-100 Sulfamerazine, 100µg/mL in Acetonitrile, 1ml Price on request 96064 Chloral hydrate Level 1 Price on request