| 摘要 |
The method according to the invention involves the monitoring, by means of a control unit, of at least one outflow, during the programmed time period, between two electrodes 30, 51 in the form of a cross, supported by lugs 33 in the case of one electrode and in the form of a peripheral ring in the case of the other electrode. These electrodes may have other shapes. In all cases, the parts subjected to an electric potential have to be separated by zones 310, 320 which are intended to prevent any contact between parts at different potentials by labels (not shown) which have become unstuck from the products presented. <IMAGE>
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