Glycerol: v/v or w/v?

John Rebers jrebers at
Thu Feb 24 17:20:21 EST 2000

When making a solution of glycerol that is supposed to be 50% (for
example), is this to be interpreted as a volume/volume percentage (i.e. 50
ml of glycerol in 100 ml final volume) or a weight/volume pecentage (i.e.
50 g or glycerol in 100 ml final volume). I suppose it could also be
interpreted as a weight/weight solution.... Since glycerol is a liquid, I'd
always used the volume/volume interpretation, but just ran across someone
who was using weight/volume instead. Curious as to which was correct, or at
least more commonly used.

John E. Rebers
Department of Biology
Northern Michigan University
1401 Presque Isle Avenue
Marquette, MI  49855

jrebers at

More information about the Methods mailing list