Headspace vial, screw top, rounded bottom (vial only)

Name: Headspace vial, screw top, rounded bottom (vial only)
Brand: SUPELCO

volume 20 mL, clear glass vial, thread for 18, O.D. × H 22.5 mm × 75.5 mm, pkg of 100 ea

Synonym(s):

Screw cap rounded bottom headspace vial

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About This Item

NACRES:

NB.11

UNSPSC Code:

41122001

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Properties

material

clear glass vial, round bottom

feature

closure type screw top vial

packaging

pkg of 100 ea

O.D. × H

22.5 mm × 75.5 mm

volume

20 mL

fitting

thread for 18

application(s)

general analytical

compatibility

for use with CTC PAL (Varian, Gerstel, Atas, Shimadzu)

Description

General description

These vials require a special cap with an 18 mm thread. The standard 18-400 threaded caps will not fit this vial. The part numbers for caps that are available for these vials are SU860101(with PTFE/silicone, 1.3 mm thick), SU860102 (with PTFE/butyl, 1.6 mm thick), and SU860103 (with PTFE/silicone, 1.5 mm thick). These caps are made from stainless steel and are magnetic.

Application

Headspace vial may be used for the following:

In the determination of partition coefficient of ethyl acetate in water at 0° C from independent analyses of the total amount of ethyl acetate present in the vial, by automatic equilibrium headspace gas chromatography and vapor phase calibration (VPC).
It may be used in the analysis of volatile polar residual solvents present in pharmaceutical products, during development and optimisation of headspace SPME method by GC-MS.
It may also be used in the isotopic analysis of ¹⁸O in the leaf water of C₃ and C₄ grasses, during establishing a grassland signature in veins, as it was found that grasses with different photosynthetic pathway have different interveinal differences.
It may also find application, in investigating metabolism by Pseudomonas fluorescens of volatile haloaliphatic hydrocarbons like 1,2-dichloroethane and 1,2-dichloropropane, which are some of the major contaminants of underground aquifers.

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