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Reston stable isotope lab (RSIL): reference VSMOW

Detailed Description

Photo of glass ampoules of reference material VSMOW. This reference material (RM) is an international measurement standard that defines the zero of the δ2 H and δ18O Vienna Standard Mean Ocean Water–Standard Light Antarctic Precipitation (VSMOW-SLAP) isotope scales in water and in all other hydrogen-bearing substances and in selected oxygen bearing-substances.


Public Domain.