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27232

Supelco

Stoppers

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

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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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This Item
SYNS111922SYNS112425SYNS112440
Supelco

Supelco

27232

Stoppers

Synthware™ PTFE stopper with handle joint: ST/NS 19/22

SYNS111922

Synthware™ PTFE stopper with handle

Synthware™ PTFE stopper with handle joint: ST/NS 24/25

SYNS112425

Synthware™ PTFE stopper with handle

Synthware™ PTFE stopper with handle joint: ST/NS 24/40

SYNS112440

Synthware™ PTFE stopper with handle

O.D.

20 mm

O.D.

-

O.D.

-

O.D.

-

packaging

pkg of 100 ea

packaging

pkg of 1 ea

packaging

pkg of 1 ea

packaging

pkg of 1 ea

stopper diam.

20 mm

stopper diam.

-

stopper diam.

-

stopper diam.

-

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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27016

Aluminum crimp seal (without septum), silver aluminum, tear-away, diam. 20 mm, pkg of 100 ea

27200

Aluminum crimp seal (without septum), silver aluminum,

pressure release

, diam. × opening 20 mm × 8 mm, pkg of × 100 ea

27227-U

Aluminum crimp seal (without septum), silver aluminum,

removable center

, diam. 20 mm, pkg of 100 ea

27230-U

Aluminum crimp seal (without septum), silver aluminum, open center, diam. × opening 20 mm × 9.5 mm, pkg of 100 ea

33183

Hand Decapper, for use with 20mm crimp seals, pkg of 1 ea

33280-U

Crimpers, Hand crimper, for use with 20mm seals, pkg of 1 ea

22316-U

Hand crimper, adjustable, Hand crimper, adjustable, for use with 20 mm crimp seals, pkg of 1 ea

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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
Protein Formulation and Delivery.
Eugene J
Science, 147-147 (2007)
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
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
Determination of concentration and carbon isotopic composition of dissolved methane in sediments and nearshore waters.
Brian PN
Analytical Chemistry, 67 (2), 405-411 (1995)
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