| 摘要 |
A container includes a funnel having a first opening at a first end and a second opening at a second end opposite the first end, the funnel defining a funnel volume between the first and second openings and the first opening being larger than the second opening; a first cap shaped to repeatedly attach to and detach from the funnel at the first end, the first cap sealing the first opening when attached to the funnel; and a second cap shaped to repeatedly attach to and detach from the funnel at the second end, the second cap sealing the second opening when attached to the funnel. When a liquid or fine-grained substance (e.g., a powder) is placed within the funnel volume, attaching the first and second caps to the funnel at the first and second openings seals the liquid or fine-grained substance within the funnel volume.
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