| 摘要 |
A test device and a method for assessing the biocidal efficacy of a liquid are disclosed. The device includes: a vessel, an inlet in communication with said vessel, means for introducing a predetermined volume of a liquid into said vessel via said inlet in a first direction, a porous filter interposed between said inlet and said vessel, and a predetermined quantity of biologically active organisms positioned within a region defined by said vessel and said porous filter, said region being on a side of said porous filter which is opposite said inlet, wherein said means for introducing a predetermined volume of the liquid also operates to expel the liquid from said vessel via the same inlet through which it was originally introduced but in a second reverse direction and wherein said filter has a pore size effective to retain said organisms in said region to assess the biocidal activity of the liquid and prevent said organisms from being expelled with the liquid when said means for introducing a predetermined volume of the liquid is operated to expel the liquid. |
