New Hobby Ultrasonic Record Cleaning

@antinn,
Thanks for the thread, I will certainly check this out.
I also have a thread to post, this is from the Audiophile Man, who is based in the UK. He has a fantastic site with lots of information, reviews, etc- many based on his own experience.
In addition to ultrasonic cleaners and methods, he goes into quite a bit of detail as to surfactants for cleaning.
I highly recommend checking this out.
https://theaudiophileman.com/surfactant-clean-vinyl-buyers-guide/?unapproved=29127&moderation-ha...

I have cleaned nearly 1,000 discs using the V-8 ultrasonic cleaner.  Heat is not an issue if it is less than 45 degrees centigrade.  I have never had a record warp with this ceiling.  Heat is beneficial for cleaning and improves the activity of the surfactant and in my opinion, should be used.  I currently use Rushton Paul's formula for the ultrasonic bath with excellent results (0.13% Triton X100 and 5 % isopropyl alcohol in distilled water).  Prior to this I used Dave Radcliffe's recommendation of distilled water with several drops of photo-flo.  Paul's formula is far better.  So much so, I am recleaning my previously cleaned lps with audible improvement on lps that I thought were as clean as possible.  Pops and ticks aren't changed, but the imaging is sharper and more lifelike.   I initially used a 15 minute bath, but after reviewing the Kirmuss technique, I now do 3 5 minute applications, with a distilled water rinse with an osage brush and vacuum on vpi after each bath cycle.  If you use a surfactant in the ultrasonic bath, you should do a final fresh water rinse. Paul recommends 3% ethanol in distilled water to further reduce the surface tension of the rinse. I was skeptical that this would make a difference, but it did. I put the disc on my vpi and use a different osage brush for four revolutions and vacuum dry. I have been using the 3 cycle Kirmuss modification with interval washes for about 3 months on my favorite previously "clean" lps.  Unfortunately, the sound difference is significant.  I initially wondered if I was imagining the sonic difference, until my wife commented that after recleaning a UK first press Quadrophenia, that for the first time ever, she could clearly make out all the lyrics clearly in Love reign o'er me. 

@orthomead,

Note of caution:  5% IPA has a flash point of 50C (122F); so when heated to 45C (113F) and above you start getting close; and yes I know you have never had a problem.  Not to belabor the risk, but as equipment ages from use, the electrical contacts wear, capacitors age and the risk for arcs & sparks increases.  

Otherwise, 3% IPA  can lower the surface tension of water from 72 dynes/cm to ~55 dynes/cm, so at least for IPA, the small amount of IPA causes a pretty big drop.  I do not have surface tension the data for ethanol (which will likely have methanol as the denaturant).

Antinn, Amazon carries the Tergitol 15-S-9 surfactant, but it’s $160.00 for 500 ml. It sounds like a better product from what you said, but that’s a bit pricey, for me anyway. I guess I’ll go for the Triton X100 instead at $20.00 for the same amount. It would have been nice to have the detergent factor the Tergitol product provides, but unfortunately one has to live within their means. Thanks for the recommend anyway.

Mike

@8th-note,

www.thevinylstack.com