Hello Infection.
The Elmasonic P60H is the top of the Elmasonic line: internal heater with thermostat and thermometer, timer, 37 KHz and 80 KHz operation, fractional power, degas setting, sweep setting, and pulse setting. The drain valve is top quality, which means that you can leave the chemistry to settle overnight, then turn on a slow drip, and let the tank drain into a jar over an hour or two. At least 90% of the sediment is left behind; with practice it’s more like 99%. Who needs a filter when gravity does the work?
The most useful accessory is a stainless steel basket, which allows one to clean small items, like jewelry. If you are a DIYer, you can find lots of uses. I use mine to clean electronic boards, other parts, and tools on the 37 KHz setting. Bonus value!
My cleaning chemistry is simple: distilled water (not purified or bottled drinking water) and a good lab grade detergent near the minimum concentration recommended for US. I use VersaClean from Fisher Scientific, which is rated for US and especially formulated for plastics. That means 4 litres of distilled water and 125 ml of VersaClean. Nothing else. I find that following good scientific practice saves much angst.
I preheat the chemistry using the 40 degrees C setting. Since the temperature sensor is near the top of the tank, the interior is hotter, so the chemistry must be stirred. If it gets too hot, I simply wait half an hour for it to cool. When the temperature is a uniform 40 to 45 C, a little more than body temperature, I put two records on a Vinyl Stack spindle, separated by 1.5 inches to allow the US wave plenty of space to develop, and place them on the Vinyl Stack motor assembly. (Actually, I do a test fit to adjust this without any chemistry present). I spin the records in the warm chemistry to get the records warm throughout.
Then I set the P60H to 100% power at 80 KHz for 20 minutes, set the Vinyl Stack to spin at 1 rotation in 5 minutes, and wait for 20 minutes. I rinse 4 times: with filtered and purified running water poured directly onto the records, a twice purified water bath, pour more running filtered and purified water, and a final bath in distilled water. That’s starting with very pure water from the tap. You may decide to use bulk purified - I would test it first on disposable records.
Then I set the records to air dry in a dish rack. That evening I put the clean records in new sleeves, and enjoy at leisure.
Don’t forget to degas the mixture every time you pour it, and every time you top it up. With practice, you can experiment with higher temperatures and disposable records. I continue to clean records to 50C, but have warped records permanently at 55C.
I cleaned a dozen garage sale records first, to get the hang of it. I noticed that the records warped immediately when put in the warm bath - but - happy days, it’s temporary. By the time I remove them, they can be flatter than when I started (subjective impression, not measured).
Sounds complicated, but isn’t. The Elmasonic is a pro’s machine, it’s easy to set, and keeps its settings. So is the Vinyl Stack.
Total cost here is considerably under $2000. That’s less than the cost of retipping my Koetsu, so if I reduce wear to 60% or less, the US has been free; if my three years of experience holds true, wear is far below 60% of normal, and the Elma has more than paid for itself.
More details on Rushton’s US thread. Good call on your part. And good luck!
