ASTM D-4815 Internal Standard Back Catalog number: 51072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8981.19-100-ME 3-Chloro-1,2-propandiol-1-monopalmitate-d5, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 673249 Demeton-S-methyl-sulfone, 100 µg/ml, Acetonitrile Price on request 1530.13-K-IO Fluorene-d10, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 81103-79-9 Price on request