It sounds as if a separation of polymers and pfed was accomplished. The encapsulators are still present however, albeit in the liquid form.
This is why tetra works so well as a pre-wash.
It will carry away the encapsulator polys.
Chembee12: You had a post not long ago that posed the question pertaining to not seeing any benefits from tetra or turps washes because nothing could be seen floating around in solution afterward.
Most of the foilers are smaller than the eye can see, but they can bee seen in a mass.
Here is a challenge!
Take a box of goodies and crush em UP fine.
Do a tetrawash of the pillmass and collect the tetra in a small jar by putting the whole mess through a single filter and squeezing off the excess tetra.
Swirl the tetra/poly's and you'll see nothing!
Let the poly infused tetra set for 2 days and then swirl.
You'll bee amazed at what you see!
Today tetra alone is not very effective at battling an army of co-polymer gaaks but for alky extractions in combination with other solvents, tetra is still regarded as an indispensible tool as it attracts polymers that other solvents won't touch.
While it's time consuming for the most part, evaporating solutions is sometimes the only surefire way of discovering what you are dealing with.
So many questions on the board could be answered before being asked, with a simple evap of the substance/solution!
Just a little reminder!
Many bees think they need to know what they are looking for by performing a certain procedure during extractions.
Not so if you're the bee doing the pioneering!
When in doubt...EVAP!
Then you tell us