Those of us who enjoy scale modeling, nail art, painting with acrilycs or in general using a paint composed of a pigment mixed with a solvant, have likely experienced this situation:
We have a growing "collection" of paint bottles, with many different colors, and as time goes by the pigment precipitates to the bottom and the solvant raises to the top.
If you want to use that paint, you can spend 15 minutes shaking the bottle manually, or use an electric shaker.
These products have:
a holder for the paint bottle and a rubber band to hold it in position -typically with 6 holes to make it conform to many bottle sizes-.
and an internal eccentric mechanism that generates a vibration to shake the paint.
I've been using mine for a long time, being able to reuse acrylic paints that had been sitting on my shelves for more than two years.
The product comes with a connection to the electric supply, and also a slot for 4 AA batteries.
Important: make sure to pick the one with the adequate plug for your country.
We have to prepare each shipment individually as they are ordered, so allow us in 3-4 weeks for it to arrive in USA/Canada (to be safe) and 3-6 weeks rest of the world, though thy are usually delivered much faster.