Ultrasonic cleaning


How many of you are ultrasonic cleaning your records and what solution are you using? I have a Kirmuss ultrasonic machine and I am currently using Tergikleen solution with distilled water. Have some Audio Intelligence ultrasonic solution on order to try. I can tell a big difference with noisy records lowering the noise floor. 

lnitm

I also use a generic ultrasonic cleaner from Amazon 

 

I use distilled water and a capfull of Spin Clean Record Washing fluid. 

 

I heat the water to 30C for the cleaning.  

For what it's worth I precede this with a dry cleaning to remove as much dust out of the grooves and I follow it by a traditionally Spin Clean to get anything stuck in the grooves. Overall I can take a filthy antique store record and nearly fully restore the original sound. 

@Initm Photo Flo is a surfactant like Triton X-100 which breaks water's surface tension and allows it to get down deep into the grooves instead of riding nearly on top of them. A few drops go a long way.  In film photography and printing they call them "wetting agents". +1 on your idea of using a vacuum machine for a quicker drying method after ultrasonic cleaning. I'm sure you know already, but for others who don't, the key is not letting it rotate too many times, after it is dry, under the wand such that the record builds up a static charge and attracts dust. 

Kodak Photoflo contains ethylene glycol as well as a nonionic detergent.  EG is probably something you don’t want for cleaning LPs.

I use the Rush Paul method slightly modified:

I've deviated slightly (Triton -X100, 99% isoproful, just RO water in the US tank), but I am thrilled with the results. I got side tracked by Neil Antin and his Precision Cleaning. It's good if you only have a few records to clean, but when you have hundreds regularly you need to do it in volume. I've tried many different techniques, but Rush's technique is the best and cheapest I've found. It's gotten even cheaper as many US tanks come with a record spinner/spit.

 

There have been dozens and dozens of threads written on the subject. Just check any forum. VPI lost theirs but it went over 200 pages. Neil's manual technique is the process de jure. He writes as if he is an expert using US and Vaccum cleaning but he has no direct user knowledge. He can probably clean one record real well while I clean 4-6 just as well.

 

 

@tuberculin,

Are you using the Triton X100 at 0.13%?  This would be about 6.8 times its critical micelle concertation (CMC) which is a pretty high concentration - but Paul Rushton specifies rinsing with a vacuum-RCM

Are you spacing the records at 1" as Paul specifies?

Are you spinning as slow as Paul says which is 3-revolutions/10-min which is 0.3-rpm/min?

If you read Chapter XIV of Precision Aqueous Cleaning of Vinyl Records-3rd Edition - The Vinyl Press, how much does this differ?  PACVR would recommend only 2.5% IPA vs 5.0% IPA, and PACVR would recommend Tergitol 15-S-9 over Trition X100 because it's much more efficient - 6.8X CMC = 0.035%, and the record spacing is the same recommendation as is the slow spin speed.  The difference is that PACVR discusses the rational for the why.  

As far as hands on experience, I had many years of experience with using ultrasonic cleaning tanks to precision clean components where the consequences could be essentially an explosion (high pressure oxygen) or life threatening (life support systems).

As far as vacuum-RCM, except for the few automated units, it does no cleaning - it's merely convenience and the chemistry, the brush and the user's technique is what does the cleaning.  Otherwise, I have assisted people across of globe with setting up their record cleaning processes, and the lessons learned are not from one person's experience but from 100's.  

But after all is said and done, cleaning a record is not rocket science, the science of precision cleaning is well documented such as Particle Adhesion and Removal | Wiley Online Books.  The record benefits from being a relatively simple surface with no inaccessible surfaces.  The challenge is removing very small particles that can be very difficult to remove, doing no damage to the surface (which has a surface roughness equal to a highly polished surface) and leaving no residue.  

But if the goal post is hands on cleaning of a record with a UT tank, well then guilty as charged.  

Take care,

Neil Antin