| 摘要 |
Disclosed are fluid dispensers comprising: a) a fluid reservoir, b) a fluid feed line, c) a fluid transfer zone, d) a capillary overflow, e) a capillary control valve, and f) a porous applicator head, wherein: i) the fluid feed line communicates with the fluid reservoir and the fluid transfer zone; ii) the fluid transfer zone is intermediate to the porous applicator head and capillary overflow; iii) the capillary overflow is in communication with the transfer zone and/or the fluid feed line; and iv) fluid is drawn through the porous applicator head by means of capillary action; and v) the capillary control valve regulates the flow of fluid in and out of the capillary overfl ow.
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