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重要文件

27018

Supelco

带有 PTFE/硅胶隔垫的带孔螺纹盖

black polypropylene hole cap, thread for 13-425, PTFE/silicone, septum thickness 1.5 mm, for use with 4 mL vial, pkg of 100 ea

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About This Item

分類程式碼代碼:
41122001
暫時無法取得訂價和供貨情況

材料

PTFE/silicone
black polypropylene hole cap

特點

closure type black polypropylene hole cap
pre-assembled

包裝

pkg of 100 ea

膠墊厚度

1.5 mm

接頭

thread for 13-425

相容性

for use with 4 mL vial

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Questions

  1. Are these caps gas-tight? Can be used with any kind of 4 mL vials or they are meant to be used with specific vials?

    1 answer

    1. No, this product is an assembled screw-hole cap with a PTFE/silicone septum. There is no indication it is gas-tight. It can be used with any vials with 13-425 threading.

      For gas-tight applications, the magnetic screw cap for the CTC instrument, such as SU860101, is currently offered. This cap features precision threading with numerous threads to force the septa against the vial making it gas-tight.
      Please see the product in the link below: https://www.sigmaaldrich.com/product/supelco/su860101
      Vials suitable for this cap are listed in the Related Products section of the product page.

      Another option is the Mininert® Valve screw caps, such as product 33300. It enhanced sealing ability for containing most volatile liquids and gases at low pressures:
      Link: https://www.sigmaaldrich.com/product/supelco/33300
      Vials suitable for this cap are listed in the Related Products section of the product page.

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