| 摘要 |
<p>The biological activity within a container or bag containing a foodstuff or a human thrombocyte concentrate is monitored by means of an apparatus (10) for indicating the partial pressure of carbon dioxide. The apparatus (10) comprises a first foil (24) of a light-transparent material substantially impermeable to gas and water, a second foil (20) constituting a CO2-permeable membrane, and an indicator system contained within a sponge (22) which is enclosed within a chamber defined between the first and second foils (24 and 20, respectively). As CO2 permeates into the chamber defined between the first and the second foils (24 and 20, respectively), the indicator system generates a visible indication in response to exposure to CO, which indication is visible through the first foil (24).</p> |
