That's way different and quite curious edwyn. The records I tested started out clean like yours, cleaned by RCM weeks to months beforehand as stored in my collection. I wiped as if I was cleaning the grooves, not light like I was just removing surface dust, and it was a quick (maybe 5 second) single wipe but with some pressure. I covered half with paper during the wipe to be sure it wasn't exposed. After the dust exposure, I either tapped or blew of the record to see what stuck. Maybe that is the difference: did you blow off the unstuck dust? After the dust tank dip, the entire record was covered, but dust only stuck to the treated side. I did this on 3 different records on two different occasions. On a couple I did side A vs. side B and got the same result. I only tried the Zerostat on one trial, it is not something I use on my records, I just wanted a tool to investigate static potential.