Chemical Analysis of Metal
Chemical Analysis of Metal 2

GDS is a method for quantitative chemical analysis of the elements in a metal sample.

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Purpose: Quantitative chemical analysis of the elements in a metal sample.

Sample: Solid metal 0.75 inch (20 mm) diameter x 0.13 inch thick (3 mm) thick. Smaller sizes are possible with additional sample preparation.

Price & Delivery: Contact us for a quote.

Basic Description: This instrument forms a plasma with the surface of a solid metal sample and as all the elements fall back to their original energy state they give off light at different wavelengths for each element. The intensity of light is measured at multiple wavelengths and used to provide a quantitative analysis of each measured element. The resulting analysis can provide a complete chemical analysis of all required elements for most iron, brass, and aluminum alloys. This includes compositions such as 2024 aluminum, 6061 aluminum, 380 aluminum, 316 stainless steel, cast iron, 360 brass, and 1050 carbon steel. Our instrument is currently equipped to measure the elements Al, B, C, Cr, Co, Cu, Fe, Mg, Mn, Mo, Nb (Cb), Ni, P, Pb, S, Si, Sn, Ti, V, W, and Zn. The results are in the form of a table with the percentage of each measured element listed.

Limitations: Cannot analyze samples which are very small, non-metallic, or have a lot of porosity. Some elements including many precious metals (Ag, Au, Pt) and gases (H, N, O) cannot be detected by our instrument. Detection limits are in the 0.001 to 0.01% range depending on the element so trace impurities cannot be detected. A calibrated method developed with known standards is required for each class of alloys.


  • Leco, GDS 400A, Glow Discharge Spectrometer (GDS)


  • Chemical Analysis
  • Glow Discharge Spectrometer (GDS)

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