antinn

Responses from antinn

Precision Aqueous Cleaning of Vinyl Records
@lewm, This is what I specifically stated in the book, and I stand corrected on 'generally some kind" VIII.9 ENZYMES. Enzymes are biological catalysts that are generally some kind of protein. There is the “lock & key” analogy associated with... 
Precision Aqueous Cleaning of Vinyl Records
@mglik  Enzymes are biological catalysts that are generally some kind of protein. There is the “lock & key” analogy associated with enzymes and cleaning. The particular enzyme must be the right key to unlock (dissolving) the particular soil. ... 
Precision Aqueous Cleaning of Vinyl Records
The science of surfactants is pretty amazing - there is very little they do not touch.  Although Triton X100 is now banded in AU/EU/UK because it's an aquatic toxin.  But Polysorbate 20 (same Tween20) is still available, so the book now lists Poly... 
I finally got a record cleaning machine. First thoughts.
The analysis of the bearing stylus load is actually quite complex, and an example of the complexity and loads is addressed in the article Dr. A. M. Max, Disc Phonograph Records, Max, RCA Engineer Magazine 1966-08-09 1966-08-09.pdf (worldradiohisto... 
Precision Aqueous Cleaning of Vinyl Records
@lewm  Your opinion wrt IPA being a superior solvent to ethanol is spot on with the science.  In the book, I did a basic Hansen Solubility Parameter analysis, and of the alcohols, IPA has the lowest Hildebrand solubility parameter - the lower the... 
Precision Aqueous Cleaning of Vinyl Records
@lewm  Agreed, however, I an not sure wiki is correct - here is just one example of reagent 'denatured' alcohol contents (vwr.com) and methanol is just 5%.  However, this form of denatured alcohol \\TAHOE\APPS\MIRS\REPORTS\MSWRPTM.FRX (mscdirect.... 
Precision Aqueous Cleaning of Vinyl Records
@lewm  You are preaching to the choir, this what my book PACVR 3rd Ed states: VIII.8.1.a Denatured Alcohol. Denatured alcohol that is purchased on-line or at a hardware store is generally ethanol (drinking alcohol) that has been denatured (made ... 
Precision Aqueous Cleaning of Vinyl Records
@pryso, Open the document with Adobe PDF Reader.  You should have an option to open the document (right click OPEN with) with the web browser or open with Adobe PDF Reader.  There should be a free app Adobe PDF Reader for MACs.   
Precision Aqueous Cleaning of Vinyl Records
@pryso, There is a left hand drop-down Table of Contents and clicking (touching if you have a touch screen) on any Chapter will link you to the applicable Chapter.  Otherwise the document is extensively cross-linked so if you click on any  refere... 
Precision Aqueous Cleaning of Vinyl Records
@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 ... 
Precision Aqueous Cleaning of Vinyl Records
@robjordan  Rob, Yes, the Dehypon is ok to use as wetting agent in this mix. As far as the crystalline citric acid, this is where I stop.  I am not getting into the formulating of products.  The DWV + some drops of a nonionic surfactant wetting... 
Precision Aqueous Cleaning of Vinyl Records
@robjordan, Rob,  The Ecover Zero Non Bio is a good product.  I was able to locate this SDS Ecover-Laundry-Liquid-Zero-Non-Bio-Laundry-Liquid-COSSH-Sheet.pdf and it mostly supports what their site is listing for ingredients.   Essentially as a ... 
Precision Aqueous Cleaning of Vinyl Records
@robjordan, Rob, Dehypon LS54 is a just a pure nonionic surfactant, and relatively mild.  For pre-clean you want a more aggressive cleaner.  See what is written Table II.  A top quality liquid, machine clothes detergent that is not colored (no d... 
Record Cleaning Machines
@wavez,   One step, of course, its called a $3000 Degritter or maybe a $6000 Clearaudio Double Matrix Pro Sonic.  Convenience is expensive.  There is the ~$500 (w/shipping) Humminguru, but to get good results with it you need multiple steps. As... 
Record Cleaner Advice?
@fj40jason,  There have been some updates - instead of DWV, now using Alconox Citranox (mixed 1.5%) - all details are in the 3rd Ed - Precision Aqueous Cleaning of Vinyl Records-3rd Edition - The Vinyl Press. Take Care,