At this stage the whisky, gin or vodka is reduced in strength with reverse osmosis (RO) or deionised (DI) water to the desired bottling strength, which can be as low as 40% ABV.

Stages of Filtration & Water Treatment

RO quality water

Very pure water is produced using reverse osmosis membranes to separate the majority of salts and ions from the feed water and sending the salts and ions to waste or re-circulation.

RO quality water - Fileder Filter Systems


The use of a mixed-bed resin of anion and cation, attracts all salts and ions, removing them from the water.

Deionising - Fileder Filter Systems

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