This Draft Uganda Standard, DUS , is based on ASTM E – . ASTM Standards volume information, refer to the standard’s Document Summary . Fourier Transform Infrared Spectrometry ASTM E, ASTM E FTIR can generate an infrared spectral scan of samples that absorb infrared light. Scope. ASTM E – FTIR ANALYSIS TESTING SERVICES – ASTM E is a method of identifying organic compounds by FTIR analysis.
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Fourier Transform Infrared Spectrometry ASTM E, ASTM E
Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Computer programs are very helpful for comparing unknown spectral scans to those of known materials, but computer selected matches can be misleading. FTIR can generate an infrared spectral scan of samples that absorb infrared light. Computer matching programs have difficulties with subtle differences that can be critically important.
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This results in an FTIR spectrum without the minute details necessary to identify the unknown material.
Fourier Transform Infrared Spectrometry ASTM E168, ASTM E1252
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Inspection Validating the specifications, value and safety of your raw asgm, products and assets. However, an FTIR spectral scan alone should not be expected to identify the type of Nylon or Polyester, identify a Polypropylene or Acetal as a homopolymer or copolymer, or determine whether the Polyethylene is a high density or low density material.
Computerized spectral searches can quickly compare an unknown spectrum to ee1252 very large number of spectra located in multiple databases in a very short period of time.
Standards can be obtained from appropriate standards authorities. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Learn more about the cookies we use and how to change your settings. Validating the specifications, value and safety of your raw xstm, products and assets. Send us a request Need help or have a question?
A typical infrared scan is generated in the mid-infrared region of the light spectrum. A spectral scan of a reference material can be generated and stored in a spectral library database. Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.
FTIR can identify the difference between materials, such as polypropylene and polyethylene, which are made of only carbon and hydrogen but have different types of bonds between the elements. FTIR is the first logical step in identifying a polymer.
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ASTM E1252 – FTIR ANALYSIS TESTING SERVICES
Samples, which can be easily tested by reflective FTIR, include polymer pellets, parts, opaque samples, fibers, powders, wire coatings, and liquids. Poor at identifying minor components in mixtures or finding trace additives unless they can be separated prior to analysis.
Certification Formally confirming that your products and services meet all trusted external and internal standards. Identify the primary component of a plastic, rubber, or organic material. If the material does not absorb infrared light a spectral scan cannot be obtained. Materials with similar ast bonds but different molecular weights such as hydrocarbon oil, paraffin wax, low density polyethylene, and high density polyethylene can have similar spectra. You ast find similar items within these categories by selecting from the choices below:.
A stored reference scan will allow all future material scans to be compared back to the same earlier scan. A computer program is used to subtract the peaks associated with aztm base polymer from the spectral scan and then an analysis of the remaining spectral scan is performed.
FTIR spectral subtractions are used to look for internal contamination in polymers.