Patent name: A new type of cap used in plant tissue culture bottles Patent applicant Beijing Zhongdiel Gene Technology Co., Ltd. Principal Applicant Address 102202 Inventor Zhang Tiehan, Chen Yujie, No. 22, East Main Street, Nankou Town, Changping District, Beijing, China Qi Yuxuan; Liu Guizhen; Chen Zhenghua Application (Patent) No. 200420084808.4 Date of Application 2004.08.05 Certification Date Approval Notice No. 2698729 Audit Notice Date 2005.05.11 Manual CD-ROM D0519 Main Classification Number B65D51/16 Classification Number B65D51/16; B65D41/08; C12M3 /00; A01H4/00 division original application number priority item 2004.3.8 CN 200420005860.6 Abstract The utility model discloses a novel bottle cap used in a plant tissue culture bottle, and the inner edge of the bottle cap is arranged with the external thread of the bottle body mouth. The internal and external threads are characterized in that: an air inlet is provided at the top of the bottle cap, and the air inlet corresponds to a through-hole of a non-woven fabric on a plastic film covering a bottle mouth, and the bottle cap is plastic or a composite material thereof, such as PVC, PP materials. The utility model has the advantages of simple structure, high efficiency, repeated use, and low cost. Sovereign item 1, a novel bottle cap used in a plant tissue culture bottle, and the inner edge of the bottle cap (1) is provided with internal and external threads (2) which are in line with the external thread of the bottle body, characterized in that: The air port (3) corresponds to the non-woven fabric through hole (5) in the plastic film (4) covering the bottle mouth.
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