EPA Method 8141 Surrogate Standard Back Catalog number: 92387 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA13920000AL Formothion, 100µg/ml in Acetonitrile Price on request 59627 pH 10.0 Standard @ 25°C Price on request D450653-50MG Dihydroergotamine (+)-Tartrate Salt (2:1), 50mg Price on request