2,5-Dimethylbenzaldehyde-DNPH, 100µg/ml in AcN, 1ml Back Catalog number: M-8315-R-DNPH-09 Availability: In the manufacturer's stock Price on request - + Recommended GLC-744 GLC Reference standard 744, 100mg Price on request 0613.30-100-IO 17ß(H),21ß(H)-Hopane, 100µg/min Isooctane, 1ml Price on request 23013 EPA Method 8260 - Purgeable Internal Standard Price on request