05-12-2019 дата публикации
Номер: US20190366327A1
Принадлежит:
A container cap liner that that facilitates the storage of gases and various volatile organic compounds (VOCs). More particularly, the container cap liner reduces the loss of gases and various volatile compounds thereby providing for relatively longer storage periods with relatively more accurate analytical analysis. 1. An analytical storage device comprising:a container for storing a sample for testing containing gases or volatile organic compounds, the container having a top opening and a rim surrounding the top opening;a cap including a liner for said container top opening, wherein said cap is configured to engage with said container and compress said liner against said rim surrounding the top opening of said container;said liner comprising a layer of polyvinylfluoride or polyvinylidene fluoride and a layer of compressible material.2. The analytical storage device of wherein said layer of polyvinylfluoride or polyvinylidene fluoride is present at a thickness in the range of 0.01 mm to 0.1 mm.3. The analytical storage device of wherein said compressible material is present at a thickness in the range of 1.0 mm to 5.0 mm.4. The analytical storage device of wherein the gases comprise one or more of methane claim 1 , ethane claim 1 , ethylene claim 1 , propane or butane.5. The analytical storage device of wherein the volatile organic compound comprises compounds having a boiling point of less than or equal to 250° C. measured at standard atmospheric pressure.6. An analytical storage device comprising:a container for storing a sample for testing containing gases or volatile organic compounds, the container having a top opening and a rim surrounding the top opening;a cap including a liner for said container top opening, wherein said cap is configured to engage with said container and compress said liner against said rim surrounding the top opening of said container;wherein the initial level of gases or volatile compounds contained in the container is retained at a ...
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