| 摘要 |
The apparatus 10 comprises a receptacle 11 (e.g. PET bottle) having a neck 12 with formations 14, 16, a filter 17, an aerosol valve 18 and a collar 19 having a hollow chamber and formations 19c (e.g. threads, flange snap connectors) engageable to secure the collar and neck. The collar locates the filter to permit filtering of fluid passing via the neck and locates the aerosol valve with its actuator 18b accessible via the hollow chamber. An actuator assembly 22 is operable from outside the chamber to act on the aerosol valve and adjust the degree of opening of the valve. The collar assembly may include a thread 19f in the hollow chamber and an externally threaded position-adjustable securing member 23 to permit securing of the filter and valve within the collar assembly. Allows use of standard, cheap aerosol valves and drinks bottles for field extraction using hydrofluorocarbon solvent. |
