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Analytical Laboratories Applications

Atomic Absorption (AA) Spectroscopy

Using the optimum specialty gas and equipment will greatly improve the accuracy of your analytical results when using Atomic Absorption (AA) Spectroscopy.  AA Spectroscopy comprises the techniques of Flame Atomic Absorption Spectroscopy (FAAS), Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) and Hydride Generation Atomic Absorption Spectroscopy (HGAAS). Applications include the analysis of food, cement, ceramics, glass and metals, as well as analyses in biochemistry, geochemistry and the environment.

In FAAS, the most common AA technique, Acetylene is commonly used as a fuel gas and requires low levels of Phosphine and Hydrogen Sulphide to give a cleaner flame and less interference to ensure optimum analytical accuracy. Air and Nitrous Oxide are commonly used as an oxidant gas and require low levels of water, Hydrocarbons, CO and CO2 to ensure accuracy.

The Experis® specialty gases range from Air Products has been specially developed for the analytical user and includes ultra high purity gases with low critical impurity levels for this technique. We also offer a range of gas-handling equipment including high quality cylinder regulators, manifolds, valves and purge systems which will help to optimise the smooth operation and accuracy of your analysis.

The recommended gases and equipment for this application are listed below. Please note that our recommendation is based on common analytical requirements, so you may require a higher purity grade if analysing to lower concentrations or be able to use a lower purity grade if analysing to higher concentrations. If you require any additional advice on the right purity grade for your needs, please contact us.

Other Applications

Product NameDescription/BenefitsDownloads
Gases

Acetylene Premier/Premium

Used as a fuel gas, Acetylene Premier/Premium contains low levels of PH3 and H2S to ensure a cleaner flame, less interference and better analytical results.

Used as a fuel gas, Acetylene Premier/Premium contains low levels of PH3 and H2S to ensure a cleaner flame, less interference and better analytical results.

Argon Premier/Premium

Argon is valued both as a gas and a liquid for its inert properties.  Argon Premier is the perfect gas for applications such as ICP.

Argon is valued both as a gas and a liquid for its inert properties.  Argon Premier is the perfect gas for applications such as ICP.

Nitrogen Premier/Premium gas

Nitrogen Premier/Premium gas is ideal as an AA Spectroscopy cooling gas.

Nitrogen Premier/Premium gas is ideal as an AA Spectroscopy cooling gas.

Nitrous Oxide Technical

Used as an oxidant, Nitrous Oxide contains low levels of Water, Hydrocarbons, CO and CO2 to ensure a cleaner flame, less interference and better analytical results.

Used as an oxidant, Nitrous Oxide contains low levels of Water, Hydrocarbons, CO and CO2 to ensure a cleaner flame, less interference and better analytical results.

Zero Air

Used as an oxidant, Zero Air contains low levels of Water, Hydrocarbons, CO and CO2 to ensure a cleaner flame, less interference and better analytical results.

Used as an oxidant, Zero Air contains low levels of Water, Hydrocarbons, CO and CO2 to ensure a cleaner flame, less interference and better analytical results.

Equipment

Cylinder Regulators

Essential for reducing the gas pressure at the cylinder source, our range of high-quality cylinder regulators are available in single- or double-stage, a variety of materials such as brass, stainless steel and Monel®, and various inlet and outlet pressure ranges.

Essential for reducing the gas pressure at the cylinder source, our range of high-quality cylinder regulators are available in single- or double-stage, a variety of materials such as brass, stainless steel and Monel®, and various inlet and outlet pressure ranges.

Line Regulators

Essential for reducing the gas pressure in a pipeline, our range of high-quality line regulators are available in either brass or stainless steel, and various flowrate and outlet pressure ranges.

Essential for reducing the gas pressure in a pipeline, our range of high-quality line regulators are available in either brass or stainless steel, and various flowrate and outlet pressure ranges.

Manifolds

Essential for ensuring a batch or continuous supply, our range of high-quality manifolds can connect up to six cylinders, can provide manual or semi-automatic changeover and are available in brass or stainless steel.

Essential for ensuring a batch or continuous supply, our range of high-quality manifolds can connect up to six cylinders, can provide manual or semi-automatic changeover and are available in brass or stainless steel.

Pressure Gauges

Our high-quality, accurate pressure gauges are available in brass, stainless steel or Monel® for a wide variety of pressure ranges.

Our high-quality, accurate pressure gauges are available in brass, stainless steel or Monel® for a wide variety of pressure ranges.

Purge Systems

Purge systems are essential for eliminating impurities in and/or operator exposure to the gas when changing over cylinders. Our high-quality cross-purge, self-purge and T-purge systems are available in a variety of materials for the handling of pure, toxic, corrosive and flammable gases.

Purge systems are essential for eliminating impurities in and/or operator exposure to the gas when changing over cylinders. Our high-quality cross-purge, self-purge and T-purge systems are available in a variety of materials for the handling of pure, toxic, corrosive and flammable gases.

Valves

Our range of high-quality check valves and relief valves are available in brass or stainless steel and a variety of connection sizes for the connection of cylinders to equipment.

Our range of high-quality check valves and relief valves are available in brass or stainless steel and a variety of connection sizes for the connection of cylinders to equipment.

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