What percent solution is 40mg/ml?

Dear richart,

Since the websites below list 10mg/ml as a 1-percent-solution, and
20mg/ml as a 2-percent-solution, 40mg/ml must necessarily be a
4-percent-solution.

Sources:

The Medical Algorithms Project: Conversion of Drug Measures
http://www.medal.org/docs_ch40/doc_ch40.12.html

Ohio State University, College of Veterinary Medicine: Concentrations
of Solutions
http://www.vet.ohio-state.edu/docs/fluids/part1/part1.html

Search terms used:
mg/ml "percent solution"
://www.google.de/search?hl=de&ie=UTF-8&oe=UTF-8&newwindow=1&q=mg%2Fml+%22percent+solution%22&meta=

Hope this answers your question!
Best regards,
Scriptor

---

Clarification of Answer by scriptor-ga on 11 Mar 2003 10:28 PST

Dear richart,

In your question, you did not ask for explanations. Unfortunately, I
was not able to guess what you expected in addition to what you
explicitly wrote. Mind-reading belongs not yet to the standard
abilities of Google Answers Researchers, though it might prove very
useful in certain situations.

Have a nice day,
Scriptor

- answered the question but no explanation of the chemistry involved
or how this is calculated.

Dear Richart,

Scriptor's answer is not the whole story.  There is an ambiguity in
expressing solution concentrations: are we talking of masses (often
called "weights") or volumes or a mixture of both?  One answer is
certainly Scriptor's: as The Ohio State University College of
Veterinary Medicine site clarifies, this is the "weight per volume" or
w/v system.  But it is also possible to express concentrations as
"weight per weight" (w/w) and "volume per volume" (v/v); the last is
especially sensible when the solute is a liquid, i.e. the solution is
a mixture of liquids.

For a description of all three systems, see:

http://www.ilpi.com/msds/ref/concentration.html

Search strategy: solution weight volume

://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=solution+weight+volume&btnG=Google+Search

I hope this helps.

Carnegie

Hi, Richart:

You may not have noticed this when you posted your question, but
Google Answers offers a page of pricing guidelines for customers.  For
a question priced at two dollars, GA advises as follows:

"$2 - $5  ·  Can be answered with a single link or a single piece of
information. Sometimes, if a researcher is personally interested in
the question's subject, they may provide a longer answer."

Although Scriptor provided less information than you apparently
desired, he clearly exceeded the expected guidelines for a question at
this price point.  You will find the pricing guidelines at the link
below:
http://answers.google.com/answers/pricing.html

Hopefully this will assist you in getting the sort of answer you wish,
on your next visit.

Regards,

-Chromedome