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Supelco

Stoppers

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

Synonym(s):
PK100 20MM BUTYL SEPTA

material

gray butyl rubber

packaging

pkg of 100 ea

O.D.

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.

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.

Certificate of Analysis

Certificate of Origin

Sasha D Hafner et al.
Waste management (New York, N.Y.), 91, 147-155 (2019-06-18)
This work focused on identification and quantification of systematic sources of error in manometric measurement of biochemical methane potential (BMP). Error was determined by comparison to gravimetric measurements and direct measurement of leakage. One out of three types of septa...
G B Diekert et al.
Journal of bacteriology, 136(2), 597-606 (1978-11-01)
Cultures of Clostridium formicoaceticum and C. thermoaceticum growing on fructose and glucose, respectively, were shown to rapidly oxidize CO to CO(2). Rates up to 0.4 mumol min(-1) mg of wet cells(-1) were observed. Carbon monoxide oxidation by cell suspensions was...
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...
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)

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