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OK, Duane, but years of using 99% isoprop, available at most pharmacies, tells me it works fine. 
It's cheap and available, so I don't worry about replacing the bottle each year.

-- Tom Fine

----- Original Message ----- 
From: "H D Goldman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, November 12, 2013 8:34 PM
Subject: Re: [ARSCLIST] Revox tape deck cleaning kit any good?


> Hi Tom,
>
> To clarify, my comments were about pure 1-propanol, aka n-propyl alcohol/n-propanol, and not about 
> 2-propanol, aka iso-propanol.  This two chemicals represent 3-carbon single alcohols but they have 
> different chemical characteristics are are not necessarily interchangeable esp. in applications to 
> rubbers,plastics & record cleaning.
>
> Regards,
>
> Duane Goldman
>
> On Nov 12, 2013, at 6:41 PM, Tom Fine <[log in to unmask]> wrote:
>
>> Agree about 99% isoprop being just fine for heads and guides. Good to know about HDPE containers. 
>> I always wondered how long the isoprop remained at least somewhat alcoholic and not mainly water. 
>> My general MO is to write the date I get it on the bottle and replace it after a year.
>>
>> Old-school head cleaner was actually mostly xylene, and was usually kept in a glass or metal 
>> container. I have old, I mean old, Ampex head cleaner that still works just fine. But I generally 
>> use isoprop under the theory that it's less harsh, which may or may not be true!
>>
>> -- Tom Fine
>>
>> ----- Original Message ----- From: "H D Goldman" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, November 12, 2013 6:46 PM
>> Subject: Re: [ARSCLIST] Revox tape deck cleaning kit any good?
>>
>>
>>> Hi Jan, Tom,
>>>
>>> Years ago we found that Reagent grade 1-propanol was a highly effective & safe cleaner of tape 
>>> heads & guides.  It can be stored long term in HDPE drip tip containers.  We've kept small 
>>> quantities in the bottles used for our stylus cleaner for years w/o any problems.  Most 
>>> university organic chemistry labs have the solvent on hand & would probably give you a few ml.
>>>
>>> Duane Goldman
>>>
>>>
>>> On Nov 12, 2013, at 5:04 PM, Tom Fine <[log in to unmask]> wrote:
>>>
>>>> Probably just the standard head cleaning solvent and swabs from the day. The only thing I'd 
>>>> worry about is if the solvent is stable in a plastic bottle. Maybe, maybe not.
>>>>
>>>> -- Tom Fine
>>>>
>>>> ----- Original Message ----- From: "Jan Myren" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Tuesday, November 12, 2013 5:59 PM
>>>> Subject: [ARSCLIST] Revox tape deck cleaning kit any good?
>>>>
>>>>> Hi!
>>>>>
>>>>> Does anybody have any experience with this cleaning kit from Revox for tapehead cleaning on 
>>>>> reel to reel tape recorders?
>>>>>
>>>>> http://www.ebay.ca/itm/REVOX-Tape-Deck-Head-Cleaning-Kit-/130713627452?ssPageName=ADME:X:RTQ:CA:1123
>>>>>
>>>>>
>>>>> All the best
>>>>> jan
>>>
>>>
>>> H D Goldman Lagniappe Chemicals Ltd.
>>> PO Box 37066 St. Louis, MO 63141 USA
>>> v/f 314 205 1388 [log in to unmask]
>>>
>>
>
>