Two years have scarcely elapsed since the position of osmium in the periodic system was finally decided by the painstaking re-detetmination of its atomic weight by Prof. Seubert. Previous ...

A standard laboratory coat may be reused before laundering if it has not been contaminated with osmium tetroxide. If a garment is contaminated, remove, place in chemical hood, and decontaminate with ...

Sulfide grains like these are removed for rhenium-osmium isotopic analysis to reveal the age of the diamond and the composition of the sulfide. Diameter of sulfide grains are about 0.25 mm.