Air sterilisation unit and method for sterilising air

An air sterilisation unit comprising:

• a housing having an air intake means arranged to allow contaminated air to enter the housing, and an air outlet means arranged to allow sterilised air to exit the housing;
• and air sterilisation means arranged to sterilise air within the housing by entrapping or removing undesirable matter from the air flowing from the air intake means to the air outlet means by means of a fluid comprising less than 9% hydrogen peroxide, wherein the air sterilisation unit is a standalone and portable unit, wherein the air sterilisation unit comprises a means for manipulating fluid-particle contact within the housing so as to increase fluid-particle contact within the housing, wherein the air sterilisation unit comprises an air filtration means in the form of an outer air filtration means adapted to filter particles at the point of entry into the air sterilisation unit, and wherein the air sterilisation unit comprises an air flow generation means arranged to enable air to be drawn through the air sterilisation unit, wherein the air flow generation means is located within the housing of the air sterilisation unit.