Please capitalize where necessary: the metal multi-purpose spray gun lies well in the hand.
A: The Metal Multi-Purpose Spray Gun lies well in the hand.

Please capitalize where necessary: lydia lives on small, floating island, and is bored out of her mind. one day more small islands have floated near her home and she decides to start searching for scrap and other useful tools to build herself a rocket so she can leave her tiny world
A: Lydia lives on small, floating island, and is bored out of her mind. One day more small islands have floated near her home and she decides to start searching for scrap and other useful tools to build herself a rocket so she can leave her tiny world

Please capitalize where necessary: on djursland you're never far from a quiet stream, a lake or the sea, which is one of the country's best places for catching sea trout.
A: On Djursland you're never far from a quiet stream, a lake or the sea, which is one of the country's best places for catching sea trout.

Please capitalize where necessary: centrifuge at 95,000 x g for 30 min, 4 c.
A:
Centrifuge at 95,000 x g for 30 min, 4 C.