Mr.Goldman

Surely you're not suggesting that any manual drying with any kind of cloth or brush is as thorough as a thread connected to a powerful vacuum that lifts the cleaning fluid residue and whatever else remains at the bottom of a groove out and removes it completely. 

db 

Sent from my iPhone

> On Jan 16, 2016, at 1:19 PM, H D Goldman <[log in to unmask]> wrote:
> 
> Hi Frank,
> 
> I’d suggest that the first the evaluation of a cleaning approach is thru listening before & then again after the cleaned disc has been played several times.  The safety of the chemicals involved can be evaluated readily from their known chemical properties & simple testing.  Further validation comes from long term study of treated surfaces under environmental challenge.  Ultimately it comes down to the perceived value of the cleaning itself. 
> 
> Finally you run larger studies of the approach involving varied substrates & end user methods.
> 
> Electron micrographs & vibrational correlations are a wonderful idea but they won’t change the real-time data that has already been accumulated by tens of thousands of users over 25+ years.
> 
> Regards,
> 
> Duane Goldman
> 
> H D Goldman Lagniappe Chemicals Ltd. 
> PO Box 37066 St. Louis, MO 63141 USA
> v/f 314 205 1388  [log in to unmask]
> 
> 
> 
> n Jan 16, 2016, at 11:20 AM, Frank Strauss <[log in to unmask]> wrote:
>> 
>> I have viewed this subject on the ARSCLIST several times over the past
>> ​ ​
>> several​ years, often with a fair bit of
>> ​flame​
>> attached​​​, and I think Tom is right.  Someone needs to study the effects
>> of different cleaning regimens
>> ​scentifically.  Anybody can say their system is the best, but until
>> someone actually examines the whole groove before and after cleaning, there
>> is no way of knowing for sure.  How to examine the whole groove before and
>> after cleaning is a grand question.  Can you do it with an optical device?
>> 
>>> 
>>> 
>>> 
>>>> Date:    Fri, 15 Jan 2016 07:16:30 -0500
>>>> From:    Tom Fine <[log in to unmask]>
>>>> Subject: Re: Cleaning stylus
>>>> 
>>>> Hi Steve:
>>>> 
>>>> Could you cite the presentation, preferably a link to the conference
>>> page? I would like to study
>>>> that presentation, see what their methodology was. LOC has resources
>>> where we may have the
>>>> microscope photos and the like. I also hope they addressed the issues of
>>> every day cleaning of
>>>> regular records, not just fragile problem cases.
>>>> 
>>>> -- Tom Fine
>>>> 
>>>> ----- Original Message -----
>>>> From: "Steve Smolian" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Thursday, January 14, 2016 9:59 PM
>>>> Subject: Re: [ARSCLIST] Cleaning stylus
>>>> 
>>>> 
>>>> The results of the Library of Congress' rigorous testing of record
>>> cleaning products were presented
>>>> by them at a recent ARSC Conference- last year of that of the previous
>>> one.
>>>> 
>>>> Though not named, the product that best the others, and by a
>>> considerable margin, was Disc Doctor.
>>>> There are legal reasons such Government testing does not identify
>>> products going back to NSIT's
>>>> earlier days.  The presentation was made in such way, however, that it
>>> was murkily clear that Disc
>>>> Doctor prevailed, and this was confirmed to me privately elsewhere.
>>>> 
>>>> Steven Smolian
>> 
>> 
>> -- 
>> Frank B Strauss, DMD