| 摘要 |
<p>Process for evaporating a solution, wherein a certain volume of the solution is introduced into a reservoir, a portion of the solution contained in the reservoir is transferred to a first compartment outside the reservoir, and the portion of solution contained in the first compartment is gradually and continuously transferred to an impregnation member consisting of a material capable of absorbing a liquid the said member being placed on a support outside the reservoir and outside the first compartment. To make the process easier to use and to avoid losses of solution, e.g. during the transport of the evaporating apparatus, the said process is characterized in that a passage enabling communication to be established for the transfer of a portion of the solution from the reservoir to the first compartment is opened intermittently; an external pressure is exerted on at least one elastic wall of the reservoir when the said passage is open, in order to accomplish the transfer of a portion of the solution from the reservoir to the first compartment; the said passage is closed; and the said passage is kept closed during the time intervals between intermittent transfers of the portions of the solution.</p> |
