EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43017 Nitrobenzene-d5 Price on request 96263 525 Internal Standard Price on request 71626 2-Chloro-4,6-diamino-1,3,5-triazine, 1000µg/ml in N,N-dimethylformamide, 1ml Price on request