Retention Time Marker Solution Iowa OA-2 Back Catalog number: 51183 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677131 Propylene glycol 1-methyl ether 2-acetate, 250mg Price on request 12109.15-250MG Piroxicam,neat,neat,250mg, Price on request 15218.21-K-AN 9(R)-Hexahydrocannabinol, 1000µg/ml in Acetonitrile, 1ml Price on request