Milli-Q Direct Description Milli-Q® Direct Water Purification System is a single device, in which both RO (Type 3) water and ultrapure (Type 1) water are produced directly from potable water. Request Info Other Products From Merck Life Science AFS Systems Read More » Milli-Q® IQ 7000 Series Read More » Elix Essential UV Read More » CellASIC® ONIX Platform Read More »