L-Proline Back Catalog number: 72241 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4190-ASS-5RF EPA O-FID Quantitative Calibration Check Standard (with Internal Standard) 5 Analytes, each Wt.% as listed in RFA Gasoline; units: 1x5mL, 5x5mL Name Wt.% Name Wt.% Methanol 3.80Methyl tert-buty Price on request 676979 D7-Atenolol, 100 µg/ml, Acetonitrile, 1ml Price on request 95600 L(+)Lactic acid Price on request