| abstract |
Apparatus for purifying a liquid comprising a target substance comprising at least two units arranged in series such that the feed stream of the second and any subsequent units comprises the product stream from a downstream unit, wherein each unit comprises specified components (i) to (vi), including a a switchable bypass assembly. Also claimed are the units and a flowpath assembly. The units may be essentially the same except for a device they contain, leading to advantages in terms of simplicity, cost and ease of operation, lower risk of operator error, easier maintenance and lower inventory of spare parts. |