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 CellASIC® ONIX Read More » Elix Essential UV Read More » DiluCult Read More » Milli-Q EQ7000 Read More »