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27232

Stoppers

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

Synonym(s):

PK100 20MM BUTYL SEPTA

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About This Item

UNSPSC Code:
41122001
NACRES:
NB.43
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material

gray butyl rubber

packaging

pkg of 100 ea

O.D.

20 mm

stopper diam.

20 mm

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.

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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
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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Global Trade Item Number

SKUGTIN
2723204061838080639