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 1178-25 G Urea-d4, 98 atom%D, 25g Price on request 1073-5 ML 1,2-Dichlorobenzene-d4, 99 atom%D, 5ml Price on request 1145-10 X 0.75 ML Pyridine-d5, 99.5 atom%D, 10 x 0.75ml Price on request