Description
Torch – Fixed – 1.5mm Injector – 450-05
Part Number:
PG450-05
Cross Reference(s)
Thermo VG: 3201192
Instrument Compatibility:
Thermo VG PlasmaQuad 1-3, PQ Excell
Thermo VG Axiom
Torch Detail:
Quartz, Torch Fixed, 1.5mm ID Injector, 12/5 (S13) Ball,
Exact match OEM replacement quartz one-piece torch for Thermo VG ICP-MS.
This torch has a 1.5mm ID injector, fixed. Precision Glassblowing offers a 2.0mm fixed injector torch PG450-06 as well as demountable torches with quartz and alumina injectors.
How the ICP Torch Ionizes a Sample
The RF generator supplies power to the load coil, creating a high-frequency alternating current. This, in turn, induces a time-varying electromagnetic field in the torch. As a result, with argon gas flowing through the torch, the application of a high-voltage discharge (called a Tesla spark) ionizes a fraction of the argon atoms generating ions and electrons.
The electromagnetic field in the torch then acts on the ions and electrons. As a result, they accelerate and collide with other argon atoms. If these collisions impart enough energy, additional atoms ionize creating electrons and ions that propagate the cascade.
As a result, the movement of electrons and ions in the torch generates tremendous heat. The result is an ICP, which reaches a temperature of up to 10,000 Kelvin (hotter than the surface of the sun).
What Is PFA Inert?
PFA is frequently employed as an inert substance in sample equipment on geochemical or environmental analytical chemistry field sites to assist in avoiding trace amounts of metallic ion contamination.
Features of the ICP Torch – Fixed
Single Piece Torch
Single-piece inductively coupled plasma (ICP) torches have narrow bore injectors (1.0 mm or 1.5 mm) designed to improve plasma stability and reduce plasma loading when used with organic solvents. They are the least expensive type of torch to buy initially, but they are also the least versatile and must be replaced entirely if any component is damaged. Single-piece torches can also be expensive consumables that require regular maintenance and replacement, especially when used with aggressive sample matrices like hydrofluoric acid, organic solvents, and high total dissolved solids.
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