| 摘要 |
A tamper evident bag comprises a slit therein to provide access to the interior of the bag, and a closure flap arranged to be adhered to the bag over the slit in order to seal the bag. The bag has an indicator strip which is covered by the closure flap when the bag is sealed. This indicator strip comprises a material having a surface tension less than or substantially equal to that of saliva and serves to indicate wetting of the bag or closure flap prior to attempted sealing.
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