What's the difference between i.e. and e.g.?
titer ti·ter or ti·tre (tī'tər)
The concentration of a substance in solution or the strength of such a substance determined by titration.
The minimum volume needed to cause a particular result in titration.
The dilution of a serum containing a specific antibody at which the solution retains the minimum level of activity needed to neutralize or precipitate an antigen.