SU860097

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

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
• UNSPSC Code: 41122001
• NACRES: NB.11

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
• 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.