Leo: v/v stands for volume/volume and is "typically" water as the solvent
and whatever chemical you are diluting as the solute. This is different than
say w/w or bw which is by weight.
 Example: One liter of a 1.0% v/v solution of phosphoric acid would be 10 ml
of concentrated phosphoric acid added to 990 ml of water to yield 1 liter of
solution. One kilogram of an aqueous 1% bw solution of sodium thiosulfate
would be 10 grams of sodium thiosulfate added to enough water to make 1000gm
of solution.
For the most part these are pretty straight forward, however as
concentrations go up or the solvent is changed from water to something with
a greatly different Sp.Gr. and the dissociation of the solute varies they
become more difficult. That is why normality "N" or molarity "M" are
typically used.


Regards

Michael Barmuta

Staff Engineer

Fluke Corp.

Everett WA

425-446-6076

-----Original Message-----
From: Leo Lambert [mailto:[log in to unmask]]
Sent: Monday, October 15, 2001 11:11 AM
To: [log in to unmask]
Subject: [TN] Acronym definition


Stumped!

In TM-650 method 2.3.27, Sect 4.0 Apparatus, Materials, it mentions a) TEST
SOLUTIONS - HLPC TEST SOLUTION  with 1.0%; v/v phosphoric acide and 0.1% v/v
water added.


What is v/v?

The same exists in 2.3.25 paragraph 4.2.4, 4.3.2 and 5.3.1.

This information is not in the Acronym table. Any help will be appreciated.


Leo Lambert
EPTAC Corp.
Amherst NH.
1-603-673-7822 ext 15
www.eptac.com

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