Tag: reverse-osmosis

A reverse-osmosis membrane rejects 95–99% of dissolved salts, which is why every serious blending-water train starts with one. But rejection is a function of charge and molecular size, and a handful of contaminants have neither — dissolved gases, boric acid, some silica, and the small neutral organics you can actually smell. Here is what passes, which of it matters in a bottle, and what a buyer should ask for beyond an RO spec.

Every bottling line needs near-mineral-free water, and there are only two ways to get it — purify it on site, or buy it finished to spec. Here is what an in-house reverse-osmosis-and-deionisation train really costs to own, which costs buyers routinely forget, and the volume at which the answer flips.

Three purified waters, one job — change a whisky's strength and nothing else. Here is how demineralised blending water, reverse-osmosis water and distilled water are actually made, how pure each really gets, and why the right choice depends as much on scale and stability as on the number on the spec sheet.