Thumbs up for ultrasonic record cleaning

@jtimothya

Hello JT. What I was trying to say is, not only is there no evidence of damage from US, there is evidence of no damage from US. Since the latter is a stronger statement, perhaps it is more accurate in some sense. That’s all. Both Slaw and I have done such tests.


From my post of March 6:

Methodology:
1. Wash both sides with VPI 16.5.
2. US clean both sides for 5 minutes.
3. Turn off the motor, so that one sector of the record remained in the US bath.
4. Cooked the record in US for an hour.
5. Removed the record from the bath, and rinse.
6. Play on a high end system, expecting a change every second or so.
7. Observed no change or difference of any kind.
8. Concluded that US does not damage vinyl.

Of course, after cooking in the hot bath for an hour, the record was warped - but that is a function of heat unevenly applied, not US energy.

My US cleaning process:
1. Rotate at 12 RPH.
2. Clean at 80 KHz with Elmasonic machine (German, lab grade).
3. Chemistry is 2.5% VersaClean from Fisher Scientific.
4. Temperature is 45C.
5. Rinse heroically.


I applied my usual US cleaning process for the test, except that the temperature began at 45C and rose considerably, and ceased rotation as noted.

Thanks for your interest.

Thanks for that update, Terry.  I use an Elmasonic myself - v. nice machine.
Can you do dual-frequency?  If so, a similar test at ~38kHz would be equally as interesting and perhaps more profound.  45°+ is quite warm. 

Yes, my Elma is a dual frequency device, but I rarely use 37 KHz. 45C is warm, all right - but I find that, with my machine and its temperature sensor, nothing goes wrong until 52C. The test mentioned above, finished at considerably more than that. Hence the warp.

So i have had my electronic Record cleaner since August 2018, i have to say its amazing and competatively priced.

With a collection of over 5000 LPs,EPS,45s this has been a god send they clean up like new depending on the usage of the vinyl obviously

anyone who is looking to purchase one from the lovely gentleman i bought it from can knock one up for you.

For enquires please quote "SUPERSONIC1" to the following email address Cbaker@sky.com the is based in the UK

Hope that helps Happy cleaning