Steam cleaning records 2

Does anyone steam clean records which have been treated with Last Preservative? I am convinced steaming doesn't harm vinyl but I wonder if any harm could be done to a Last treated record.

I heard Last changes the molecular structure of the record surface. So I presume we are no longer dealing with vinyl at the surface.

Thanks

Motnic : The Deep Steam Cleaning Thread develed into "Last". According to the information posted, "Lasts" compounds can not be removed by steam cleaning or other cleaning methods. The bad news posted was that ,at times, "Last" and other products ie, "Sound Guard", do not age well, creating a significant noise signature that may leave the LP with unacceptable noise making it unplayable for some readers.

Has anyone directly compared the results of steaming with enzyme cleaning? Enzyme solutions are all the rage right now but are expensive. Steaming is much cheaper and should have the potential to work better. Here's my theory. Enzymes are biological molecules that denature(break down) proteins. That's great if all that's contaminated the record is protein matter. Almost all enzymes are specific to certain amino acid groups so won't have any effect on other proteins. The heat from steam should also denature protein matter(just ask a poached egg) but has no specificity for what proteins it's breaking down. It also loosens or breaks down other biological and non-biological contaminants enzymes can't. Then there's the issue of how long an enzyme can remain active in solution(Loyd Walker's on to something here). I know these enzyme solutions must contain a multitude of different enzymes(I hope) but I haven't tried them yet and this is the logic behind why I haven't.

I have been experimenting with bacteria specifically engineered to produce enzyme's that eat certian organics ,quickly, for about a year. The organics the bacteria eat are about identical to what is found on LPs.

Some fluid designers relate they do not believe any organic material can be located on the surface of a vinyl LP. Others strongly disagree, having tests to prove the point.

The bacteria come from 2 different sources and are patiented products . The difference between enzymes only and bacteria? Bacteria are a natural living thing that digests organic material leaving H2O & C02. A steam rinse ends the natural process.

In case I havn't noted it , much of this was outlined on the old thread, including the fact the bacteria are harmless to us and our pets.

In an email to Michael Fremer last year, I detailed some dramatic results with LPs that resisted any form of cleaning and more dramatic results with bacteria cleaning on "average joe" LPs. The drawback? Time, bacteria cleaning takes time but may out-do enzymes that only break down the organics to smaller particles before being lifted off in the cleaning process. Bacteria on the other-hand eat off the enzymed organics in ways that only a microscope can verify. Bacteria products cost next to nothing compaired to the prices for enzyme products now offered for sale to audioers. More later. As for today, use the enzymes they can't hurt, except in the pocketbook.