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Stoppers

SUPELCO/27232 - stopper diam. 20 mm, gray butyl rubber, pkg of 100 ea

Synonym: PK100 20MM BUTYL SEPTA

Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-27232 100 ea
 $56.80
1/EA		 Add To Favorites
material gray butyl rubber
O.D. 20 mm
packaging pkg of 100 ea
stopper diam. 20 mm
Application: Gray butyl rubber stopper was used to seal the serum vials for isotopic analyses of CH4, during an experimental study done to determine the concentration and carbon isotopic composition of dissolved methane in porewaters. It may also be used to seal aluminium tubes containing growth media, used for assaying conditions for carbon monoxide oxidation by Clostridium thermoaceticum and Clostridium formicoaceticum.
General description: Gray butyl rubber stoppers contain zinc in the form of zinc-oxide. Choosing a suitable stopper material is very essential for studies related to denitrification coupled to methane oxidation. In some cases stoppers are replaced with sterile PTFE mininertvalves or PTFE-faced grey butyl rubber stoppers, for containment of voltiles.
UNSPSC 41122001

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