Glossary entry

English term or phrase:

w/w

English answer:

by weight

Added to glossary by Marina Soldati
Oct 30, 2007 14:29
16 yrs ago
2 viewers *
English term

w/w

Non-PRO English Tech/Engineering Chemistry; Chem Sci/Eng MSDS
Hi!

I`d like to know what the term "w/w" stands for in the following context:

Generally, in such solvent/non-solvent mixtures, the solvent can constitute from up to about 30% **w/w** of the coagulating bath, the ideal amount depending, of course, on the specifics of the spinning or coagulation process.

Thanks in advance
Change log

Nov 1, 2007 07:46: Monika Silea changed "Level" from "PRO" to "Non-PRO"

Votes to reclassify question as PRO/non-PRO:

Non-PRO (3): Edith Kelly, Maksym Nevzorov, Monika Silea

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Responses

+6
5 mins
Selected

by weight

w/w
an abbreviation for "by weight," used in chemistry and pharmacology to describe the concentration of a substance in a mixture or solution. Properly speaking, 2% w/w means that the mass of the substance is 2% of the total mass of the solution or mixture. The metric symbol g/g has the same meaning as w/w.
Peer comment(s):

agree Shirley Lao
39 mins
Thank you!
agree Maksym Nevzorov
43 mins
Thank you!
agree Antonia Toth
6 hrs
Thank you!
agree Pham Huu Phuoc : good answer!
13 hrs
Thank you!
agree kmtext
17 hrs
Thank you!
agree V_Nedkov
19 hrs
Thank you!
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thanks, Monika, for the explanation and the link."
+1
2 mins

weight/weight

-
Peer comment(s):

agree Maksym Nevzorov
45 mins
Thank you
Something went wrong...
+1
4 mins

->

Percent (w/w) or Percent (weight to weight) means grams of material dissolved per 100 g solution.
http://www.udyone.com/udydocs/udysys8.shtml

Peer comment(s):

agree Maksym Nevzorov
43 mins
Something went wrong...
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