Abstract: A portable micro-organism inactivation system comprising: a casing mounting, a UV radiation source, a pump, and releasable tube support for supporting an elongate tube to define a flow path extending therethrough which is substantially free of substantial discontinuities are provided by the present invention. The elongate tube has a first portion and a second portion wherein the first portion has a UV-transparent wall. The first portion extends in close proximity to the UV radiation source within an irradiation zone thereof while the second portion is interfaced with the pump for pumping of fluid through the system so that substantially the whole of said individual fluid unit is exposed to a similar micro-organism inactivating level of UV-irradiation, while minimizing damage to the desired components thereof. The invention also provides a method of micro-organism inactivation in a fluid using a system of the invention.

Abstract: A portable micro-organism inactivation system (1) comprising: a casing mounting (2), a UV radiation source (10), a pump (9), and releasable tube support (3) for supporting an elongate tube (4) to define a flow path extending therethrough which is substantially free of substantial discontinuities are provided by the present invention. The elongate tube (4) has a first portion (5) and a second portion (8) wherein the first portion (5) has a UV-transparent wall. The first portion (5) extends in close proximity to the UV radiation source (10) within an irradiation zone thereof while the second portion is interfaced with the pump (9) for pumping of fluid through the system (1) so that substantially the whole of said individual fluid unit is exposed to a similar micro-organism inactivating level of UV-irradiation, whilst minimising damage to the desired components thereof. The invention also provides a method of micro-organism inactivation in a fluid using a system of the invention.

Abstract: The present invention relates to a method and apparatus for effective inactivation of micro-organisms in fluids with relatively high absorbance so as to limit damage. The apparatus has a large diameter passage (2) flow-through UV radiation system with a static mixer system (11) providing an intensive fluid flow mixing within an irradiation area in which the fluid flow is controlled to provide a flow rate not less than a minimum flow rate corresponding to a maximum fluid residence time within said irradiation area required for efficient mixing, and a maximum flow rate providing a minimum residence time for effective inactivation.