EPA Method 300.0 Anions QC Standard Back Catalog number: 52519 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11631.20-10MG (S)-Citalopram oxalate,neat,neat,10mg, Price on request 11907.20-100G Fluorescein disodium salt dihydrate, 90%,neat,neat,100g, Price on request 677790 Novobiocin sodium salt, 250mg Price on request