Container with lid

Abstract

There is provided a container with lid capable of preventing evaporation of a liquid, which is stored in the container, even if the liquid is continuously pipetted from the container. The container 10 with lid has a tubular container body 12 having a bottom 12b at the lower end thereof and having an opening 12a at the upper end thereof, a first lid portion 14 for opening and closing the opening 12a of the container body 12, a second lid portion 16 for opening and closing an opening 14a which is formed in the first lid portion 14, a first connecting portion 18 which connects the first lid portion 14 with the container body 12, and a second connecting portion 20 which connects the second lid portion 16 with the first lid portion 14, wherein the container body 12, the first and second lid portions 14, 16, and the first and second connecting portions 18, 20 are integral-molded. A first sealing member 22 is mounted on the first lid portion 14, and a second sealing member 24 is mounted on the second lid portion 16.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention generally relates to a container with lid. More specifically, the invention relates to a container (or a vessel) having a lid for holding the interior thereof in a sealed state.[0003]2. Description of the Prior Art[0004]Conventionally, a large number of containers called microcentrifuge tubes having a volume of 1.5 ml have been used as specimen sampling containers, sample assaying containers and so forth in various fields of biochemistry, such as genetic engineering, cell culture and pharmacological evaluation.[0005]If such a microcentrifuge tube is used as a sample assaying container, a sample is often solved in a volatile solvent, such as methanol, when the sample is assayed. However, when a conventional microcentrifuge tube having no structure for holding the interior thereof in a sealed state is used for assaying a small amount of liquid sample, there are some cases where the liquid sample evap...

AI Technical Summary

Benefits of technology

The present invention provides a container with lid that can prevent the evaporation of a liquid stored inside. The container has a tubular body, two lid portions, and connecting portions that are all integrally molded. The first lid portion has a sealing member to seal the gap between the lid and the opening of the container body, while the second lid portion has a sealing member to seal the gap between the two lid portions. The connecting portions are folded when the lid portions close the container opening. The container is made of a resin material, while the sealing members are made of a softer material. This invention prevents the evaporation of liquids from containers, even when they are continuously pipetted.

Problems solved by technology

However, when a conventional microcentrifuge tube having no structure for holding the interior thereof in a sealed state is used for assaying a small amount of liquid sample, there are some cases where the liquid sample evaporates during operation, so that the concentration of the sample varies or the amount of the sample is insufficient by evaporation.

However, if such a conventional container with lid proposed in Japanese Patent Publication No. 4-31945 or Japanese Patent Laid-Open No. 10-323176 is used for assaying a sample, the interior of the container can not be held in a sealed state since a lid is open when the sample is assayed.

In addition, if such a conventional container with lid is used for temporarily storing a reagent therein, a small amount of reagent is continuously pipetted into each of wells of a microplate or the like from the container while the lid of the container is open, so that there is the possibility that the reagent evaporates if the reagent is volatile.

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