| 摘要 |
The pipette (1) to store small vols. of substances, and especially biological material, has a tubular section (2) with a perforated inert (3) within it, with a coaxial opening (4) through it. The insert (3) is of an elastomer, thermoplastic or thermoplastic elastomer material, or it is of metal. The passage through the insert is closed by a plug (5).
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