· Blenders International · Water Science
Purified water does not stay purified — what storage and pipework do to a blending water spec
A certificate of analysis describes the water at the moment it was tested. Between that moment and the reduction tank sit a vent, a length of pipe, a pump and a set of fittings — and demineralised water is chemically hungry enough to take something from all of them. This is what changes in transit, which of those changes matter to a spirit, and how the drift is designed out.