L-Serine Back Catalog number: 72249 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-537PDS-R1 EPA Method 537 Analyte Primary Dilution Standard (branched/linear mix), 1.2ml, methanol Price on request 96346 Phthalate Standard Price on request 677940 Di-n-heptyltin dichloride, 100mg Price on request