AAS graphite tube
Atomic Absorption Spectroscopy (AAS graphite tube) is a widely used analytical technique for determining the concentration of specific metal ions in samples. Graphite tube quality directly determined AAS testing efficiency and accuracy.
Product Info
In AAS, a sample is placed in a hollow graphite tube which is heated until the sample is completely vaporized. This type of electrothermal atomization is much more sensitive than flame AAS and can detect very low concentrations of metals (less than 1 ppb) in smaller samples. The higher atom density and longer residence time in the graphite tube improve furnace AAS detection limits by a factor of up to 1000 compared to flame AAS.
Specification
Name Apply Brands Type Type Longitudinal heating (HGA Tubes) PE, Varian, HP, Agilent, Hitach, Shimadzu, GBC, Thermo, Japan 2000 series High Density uncoated, Pyrolytic Coated without platform/with platform Transversely heating (THGA Tubes) PE, PG China, Analytik Jena, GBC, Aurora High Density, Pyrolytic Coated Without platform/with platform Application
the related products:
1. Standard Graphite Tube: These are the basic tubes used in most AAS systems.
2. Pyrolytically-Coated Graphite Tube: These tubes are coated with a layer of pyrolytic graphite to improve sensitivity and lifetime.
3. Graphite Tube with Platform: These tubes feature an integrated semicircular graphite platform which delays atomization reducing chemical & background interferences with more complex samples.
4. Partitioned Tubes: These provide the best detection limits with refractory elements, and samples that have low background or low surface tension such as organic solvents.
5. Plateau Tubes: These are used with solid pyrolytic platforms to provide the ideal platform effect for samples that have high background or interferences.
6. Omega Platform AAS Tubes: These feature an integrated semicircular graphite platform.
7. Longitudinal-Heating Standard Graphite Tube: These tubes are heated longitudinally.
8. Longitudinal-Heating Pyrolytically-Coated Graphite Tube: These tubes are heated longitudinally and are coated with a layer of pyrolytic graphite.
9. Transversal-Heating Pyrolytically-Coated Graphite Tube with Platform: These tubes are heated transversally and feature an integrated platform.
10. Transversal-Heating High-Sensitivity Graphite Tube: These tubes are heated transversally and are designed for high-sensitivity applications.
