Principle
At the end of your painting session, wash your brushes in your coil jar and dry them with paper towel.

Your paint thinner is now dirty and should be changed regularly before each painting session.
However since we are using odorless paint tinner it can be recycled easily quite a number of times.

material you will need:
2 large glass bottle ( like fruit juice ) and a plastic fennel. A pair of plastic gloves, a roll of paper towel.


Procedure
• Put on your plastic gloves
• Close your coil jar tightly and shake the liquid inside as to remix the paint thinner with the pigment that has already started to sediment at the bottom. 
• Pour the entire contents of the coil jar into bottle #1, the “recycling” bottle.

• With a little soap and water you can wash the coil jar and dry wit a clean paper towell.  Make sure the coil jar is thourghly dry.

• Pour clean paint thinner into your coild jar for your next session.

• After a few days to several weeks of settling , the paint thinner in bottle #1 (the “recycling” bottle) is now decanting.  The heavy pigment settles down at the bottom and the clear paint thinner is at the top. It should have the color of green tea with no particules in suspension.

Step 1.
The reason you want to do this into 2 steps is that every time you pour the content of your coil jar in bottle#1 the (“recycling” bottle) to be recycled, it disturbs the delicate equilibrium of the pigment settled at the bottom of the and you have a bottel of dirty paint thinner again. So you cannot harvest at the same time that you are recycling.

Step 2.
Very gently, without shaking anything, pour the clear paint thinner into bottle #2, the “recycled” bottle.
First, harvest  only the clear liquid from the top of bottle #2, the “recycled” bottle.  Watch carefully and when the gunk from the bottom of the bottle reaches the top, stop!  

To start the cycle, you will use new, clean paint thinner from the gallon container.  After a few painting sessions and emptying your coil jar into bottle #1, (the “recycling” bottle) you will have enough thinner in bottle #1 to work with.  Decant bottle #1 into bottle #2 as explained above and pour the clean, recycled thinner from bottle #2 into the coil jar.   You can also use  50 / 50 recycled and new paint thinner. It should never smell.

Meanwhile your original gallon container is getting empty and can be used in this process later on.
It takes several years for your glass jar to be full of gunk. Bring it to the recycling center of your town, or to the curbside pick up for hazardous material.  Follow local regulations for hazardous houshold material likethe oil from your car or other comparable chemicals.
And that’s it!