[quote]Bill Roberts wrote:
Sure, that should be good enough. Assuming the coffee filter isn’t one that will wind up trapping the powder and it being hard to get it out.
If that is the case, and it’s discovered after the fact, then you can use the stronger alcohol to dissolve the powder out of the coffee filter, either with repeated pourings or by putting the coffee filter into the alcohol.
If it’s predicted to be the case, it might be that you can just let it settle and pour the clear part off. This will leave some of the weak alcohol behind, but a little left behind should be okay if it’s a quite minor fraction of the new stronger stuff you later add.
A problem, if you don’t recover the powder, is that you won’t know how much letrozole is in the current mix.[/quote]
even if the filter traps the powder its not an issue.
when you use the stronger alcohol just run the alcohol thru the used filter than has the powder in it.
the powder will disolve right there,that is if you have a strong enough alcohol like everclear.this way you dont have to worry about harvesting the powder out of the filter.
you can even take the filter itself and drop it inside of the liquid and shake it to make sure its all out of the filter.
problem is you really dont know how much powder you have,unless you weigh the filter first,allow it dry completely after use and then weigh it again taring off the weight of the filter
not super precise but it should do it.
or instead of harvesting the powder why not just add a measured amount of strong alcohol into the mix.
keep track and continue adding until its all dissolved then you will know for sure how much you have.