Citrus juicers, as their name suggests, juice citrus fruits. So lemons, limes, oranges and grapefruits, and all similar fruits can be used in this device.A centrifugal juicer however can juice most non-citrus fruits, as long as the fruit has juice to extract then a centrifugal juicer can usually juice it - for example apples and berries.Fruits such as Bananas cannot be juiced.