Precision Aqueous Cleaning of Vinyl Records


FYI, I have previously posted a bit of information on cleaning, and I have now complied that and much more into a paper titled “Precision Aqueous Cleaning of Vinyl Records”. Bill Hart of The Vinyl Press https://thevinylpress.com/ who has a keen interest in cleaning vinyl records is hosting the paper. He has written an article on the paper that captures it better than I could, and a link to the article that has the free-download load option for the paper (85 pages) is here: https://thevinylpress.com/precision-aqueous-cleaning-of-vinyl-records/ . If you have not been to his site, check-it out, there is a lot of good info, and its well written. While at his site, check out the about-tab and then scroll down and click on System-Notes-Austin-2017. He has a pretty impressive system and near the end shows quite a ‘cleaning station’; using both a Keith Monks vacuum-RCM and KL Audio UCM.

Best Regards and Stay Well,

Neil


antinn

@robjordan I am based in the UK and have adopted the Manual Cleaning Method, using the solutions recommended.

To produce the correct mixture ratio's I purchased a weighing scale that is capable of showing a increment of 0.01g.

I also bought a Pump Up Pressurised Bottle, to pressure rinse the LP with a distilled water, I like to see this used as a rinse method, it certainly will wash of the  residuals, where as the mist bottle as a rinse, was a little too static when applied.   

There are other threads on here covering this same cleaning procedure during the time the PACVR Document was  Rev-02    

@lewm 

The company site lists denatured alcohol Denatured alcohol - Wikipedia while the SDS just lists ethanol.  Here is an example of denatured alcohol - Microsoft Word - 6210GHS (chemtel.net) and this a safe solvent, but this is also denatured alcohol \\TAHOE\APPS\MIRS\REPORTS\MSWRPTM.FRX (mscdirect.com) and this is not safe for the record.  But, the detergent is diluted 100:1 so even if 5%, in-use it would only be 0.05% - essentially inconsequential.

Industrial cleaning generally accepts pH 6-8 as 'neutral', and Ecover diluted 100:1 should be right in that zone, the ingredients do not include any pH stabilizing (buffering) products like phosphates and silicates.  However, the record is pretty immune to alkaline cleaners up to about pH 12.  The problem with the high alkaline cleaners is they can be a bear to rinse and residue will dry to 'rocks'.

@lewm, denatured ethanol has something like 5% methanol to make it POISONOUS so it can not be consumed, thus it is de-natured.  It is a great polar solvent and could be used for cleaning records in that it will not damage the record but it might damage the label. It is the primary solvent for Shellac and doing a French Polish requires expertise in the use of denatured alcohol. This results in a spectacular finish but given the man-hours involved is rarely done any more.

@pindac That's a great suggestion about the pressurised bottle for the final DW rinse. I will get one.