Hygroscopicity index

[liss]

What I want to know is how to get ¨Hygroscopicity index¨. Does anybody know how?

 

-edit-

 

I need to know how hygroscopic is a Rock... A chart of values with ranges such as Non hygroscopic, Slightly hygroscopic. ...

Edited May 20, 2012 by liss

[John Cuthber]

Sorry, but I think you will need to explain what you are looking for.

[insane_alien]

http://www.niro.com/niro/cmsdoc.nsf/webdoc/ndkw6u9cjh

 

is this what you mean?

 

I've used this to determine hygrocopicity at my work many times (with a few modifications so it reflected the working conditions rather than the lab setup.)

 

If it isn't then you'll have to explain, because thats the closest thing to an index that i can find or have heard of.