stopper diam. 20 mm, gray butyl rubber, pkg of 100 ea



gray butyl rubber


pkg of 100 ea


20 mm

stopper diam.

20 mm

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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.


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.

Certificate of Analysis

Certificate of Origin

Inorganic carbon analysis by modified pressure-calcimeter method.
Sherrod LA
Soil Science Society of America Journal. Soil Science Society of America, 66 (1), 299-305 (2002)
Determination of concentration and carbon isotopic composition of dissolved methane in sediments and nearshore waters.
Brian PN
Analytical Chemistry, 67 (2), 405-411 (1995)
T A Lewis et al.
Applied and environmental microbiology, 59(5), 1635-1641 (1993-05-01)
Pseudomonas sp. strain KC was grown on a medium with a low content of transition metals in order to examine the conditions for carbon tetrachloride (CT) transformation. Several carbon sources, including acetate, glucose, glycerol, and glutamate, were able to support...
Protein Formulation and Delivery.
Eugene J
Science, 147-147 (2007)
Katharina F Ettwig et al.
Applied and environmental microbiology, 75(11), 3656-3662 (2009-03-31)
Anaerobic methane oxidation coupled to denitrification was recently assigned to bacteria belonging to the uncultured phylum NC10. In this study, we incubated sediment from a eutrophic ditch harboring a diverse community of NC10 bacteria in a bioreactor with a constant...

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