Could anyone explain a method for purifying phages?

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Touma Sia

soft agar overlay follow by PEG purification methods

Krishanthi Premarathne

Thanks Touma for your answer.

Ariane Toussaint

This question has a been asked and answered here before (see for instance Jose A Sivera-Marza profile). CsCl is the method of choice I'm afraid, but there are alternatives.

Thanks Ariane.