The phrase "all separated" is correct and usable in written English.
It can be used to describe items or individuals that are not together or are divided from one another.
Example: "The documents were all separated into different folders for easier access."
Alternatives: "completely divided" or "entirely apart".
The colors all separated and mixing, everything moving, vibrating in wider and wider tremolo.
Our intelligence, above all, separated us from the animal kingdom.
"We were all separated in our different departmental islands before, but this building is about bringing people together and encouraging chance encounters.
PricewaterhouseCoopers, Ernst & Young and KPMG have all separated from their consulting units; Deloitte & Touche announced a plan to do so but has since said it will not.
Michael became a composer, writing music for film and television, and Kevin became that actor from whom we are all separated to some degree or another.
"They have the planes all separated into sizes and classes-A-20's, B-25's, B-26's, you know, the same way we got underwear in different sizes.
"I had three siblings, and we were all separated into different kinship and foster homes," said Lourdes Santana, 23, an intern at Parsons Child and Family Center who is a camp counselor in New York.
The boundary conditions investigated in [4, 9] are all separated.
The quadruple-panel system represents the passenger window design used in some classes of modern aircraft with an exterior double pane of Plexiglas, an interior dust cover pane and a glazed dimmable pane, all separated by thin air cavities.
The studied window configurations generally simulate the passenger window designs of modern aircraft classes which have an exterior multi-Plexiglas pane, an interior single acrylic glass pane and a dimmable glass ("smart" glass), all separated by thin air cavities.
