| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid for a cultivation container preventing damage of a filter even if superposing the cultivation containers on each other and free from damaging inert gas replacement property. SOLUTION: This lid 4 for the cultivation container is fitted to the port of the cultivation container for cultivating mushroom. The lid has a cylindrical fitting part 40 to be fitted to the port 7 of the cultivation container, a lid part 41 set on the top of the cylindrical fitting part 40 and having an opening 41a in the center, and a filter 42 set so as to cover the opening 41a of the lid part 41 and ventilate the outside and the inside of the cultivation container. A plurality of small projections 41d arranged in a circumferential manner and projecting to the upper part are formed on the top of the lid part 41. COPYRIGHT: (C)2003,JPO
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