Water-18O, nomalized, 97 at%18O, 1g Back Catalog number: 1179-1 G Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 1033-1 G Ammonium-d4 formate-d, 98 atom%D, 1g Price on request 1157-1 G Styrene-d3, polymerized, 98 atom%D, 1g Price on request 1177-1 G 3-(Trimethylsilyl)propionic-d4 acid sodium salt,1g Price on request