Biological sample collecting and holding device
作者： Stephen H. Hubbard
DOI:
关键词:
摘要: A sample collecting and holding device includes a vial cap. The cap central opening which can be closed using push-pull nozzle. screen or filter also covers the bottom of this an arm having scoop. This permits user to collect place it in liquid-filled vial. cap, once screwed onto vial, seals removal filtered liquid from
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