[600MRG] restoring old crystals ??

[Robert Grizzard]

Three bucks? That's a lot less than I paid for my last pint of Everclear 
five years ago.

On 02/05/2013 08:42 PM, Carl wrote:
> The 99% is a staple in many pharmacies and if they are out they can get
> it in a day or so. Had to replenish mine last year, cost under $3 at
> Walgreen in this little rural town.
>
> Carl
>
>
> ----- Original Message ----- From: "Robert Grizzard"
> <grizzarv at iowatelecom.net>
> To: <600mrg at w7ekb.com>
> Sent: Tuesday, February 05, 2013 8:50 PM
> Subject: Re: [600MRG] restoring old crystals ??
>
>
>> I would think Everclear (an EtOH/H2O azeotrope at 95%+ EtOH if your
>> state sells the 195 proof stuff) would work too and may well be more
>> readily available.
>>
>> Rob, KG7YY
>>
>> On 02/05/2013 07:25 PM, Carl wrote:
>>> Grinding or acid etching will raise the frequency.
>>>
>>> You still have to clean it first as contamination over the decades
>>> lowers the frequency andreduces activity. Use 99% pure or better
>>> isopropoyl alcohol. Then measure the frequency.
>>>
>>> Carl