Stefan
Yes you can, as long as we're talking a simple binary mixture of IPA and
H2O. After that is gets complicated real quick....
Density of IPA (also known as 2-Propanol) is 0.7855 g/ml @ 20C
Density of H2O is, of course, 1 g/ml
If you can measure the volume and the weight of the mixture, you can
calculate the density of the mixture
From this you can get the ratios of the components
Let me know if you need more info on how to arrive at the ratios
Randy
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com]On Behalf Of Stefan Trethan
> Sent: Monday, November 27, 2006 2:33 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: mini-project done, and cleaning
> no-clean flux
>
>
> I was wondering, can one accurately measure the purity of IPA or ethanol
> by measuring the density?
> Like measuring volume and weight, or using a hydrometer?
> I recently found a 0-100% ethanol hydrometer, but i'm wondering if the
> measurement would tell me much, what if the other ingredients are not
> water? What if they have a density other than 1kg/l, then the
> measurement
> would not tell me the purity?
>
> ST