Description
Torch Axial Demountable Kit 800-49L
Part Number:
PG800-49L
Cross Reference(s)
Agilent / Varian: 99-100847-00
Instrument Compatibility:
Agilent / Varian 700-ES Series
Agilent / Varian Liberty II Axial and Vista Series
Agilent / Varian Ultramass-700 Series
Torch Kit Includes:
Quartz Body PG800-10, 1.8mm. Alumina Injector PG800-45, PTFE Injector Holder PG800-48
What is the Role of the ICP Torch?
A plasma is an ionized gas, consisting of positively charged ions and free (unbound) electrons. The role of the plasma (ICP) in ICP-MS is to ionize the sample. In contrast to so-called ‘soft’ ionization sources in other forms of mass spectrometry, the ICP is a ‘hard’ ionization technique because it completely atomizes most molecules in the sample.
ICP-MS instruments use an argon plasma, although helium plasma is also an option. Although there are several advantages to using helium, argon is the gas of choice since the cost of helium is prohibitive.
What Makes the Torch Work?
Plasma forms at the end of three concentric quartz tubes, collectively known as the torch. Argon gas flows through all three tubes.
- The inner tube is the injector and contains the sample aerosol in a stream of argon that delivers the sample to the plasma.
- Concentric to this tube is another tube of argon. This is the auxiliary gas that forms the plasma.
- The outer argon tube is a cooling layer to prevent the torch from melting.
- The far end of the torch has a copper induction coil (or ‘load coil’) surrounding it that connects to a radio frequency (RF) generator.
What are the Features of the Torch?
Demountable Torch
The D-Torch is a robust and higher-performing alternative to both a single-piece and a semi-demountable quartz torch. The demountable design offers several benefits, including ease of maintenance, flexibility in configuration, and the ability to customize the torch setup for specific analytical requirements. Additionally, it allows for thorough cleaning and removal of any sample residues or contaminants that may accumulate during analysis.
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