EPA Method 525 - Tuning Standard Back Catalog number: 30033 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9398.20-K-ME (+/-)-Citalopram-d4 hydrobromide, 1000µg/ml in MeOH, 1ml Price on request 52140 EPA 1620 Standard 2 Price on request PCB-SS-A Mass-Labelled PCB Solution, 1.2ml x 1000ng/ml, nonane Price on request