{"id":6648,"date":"2021-09-03T09:25:24","date_gmt":"2021-09-03T07:25:24","guid":{"rendered":"https://soclema.com/?p=6648"},"modified":"2021-09-06T16:25:53","modified_gmt":"2021-09-06T14:25:53","slug":"tube-trace-traite-sulfinert-2","status":"publish","type":"post","link":"https://soclema.com/les-actualites/2021/09/03/tube-trace-traite-sulfinert-2/","title":{"rendered":"Tubes spécifiques pour l’analyse"},"content":{"rendered":"

Sample transfer lines for process analyzers often require special tubes.

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\"\"The starting point for the tubes offered by SOCLEMA is an ASTM-standard tube whose characteristics have been enhanced to increase resistance to corrosion, desiccation or adsorption and desorption. Using a tube that is not suitable for process conditions can lead to analysis system failure due to adsorption, contaminants, stress corrosion cracking or gas permeation during sample transfer. Reduced sample flow, excessively long response times or tube twisting are also problems that may be encountered, and which may be related to the choice of tube.

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That's why we offer special tubes:

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- Tubes in seamless drawn 316L stainless steel

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- Chemically polished and cleaned 316L seamless tubes for reduced response times.

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- Seamless drawn 316 L tubes, chemically polished, treated and coated with Silconert TM 2000, which are widely used for theanalysis of low-level sulfur compounds.

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- Seamless drawn 316L tubes, chemically polished, treated and coated with Dursan TM to improve corrosion resistance.

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- Seamless, electropolished 316L tubes offer excellent corrosion resistance.

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- Seamless, electropolished and Silconert-coated 316L tubes are the best choice for corrosion resistance and sulfur applications. Electropolishing provides an ideal surface for the SilcoNert coating. The SilcoNert 2000 coating, covalently bonded to the silicone matrix, reduces surface tension and strongly limits adsorption/desorption of moisture and sulfur compounds. Well-suited to the measurement of sulfur compounds up to PPB. They offer the shortest response time of all our tubes.

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Tests carried out on these tubes in GRTgaz's RICE laboratories have demonstrated the suitability of electropolis and Sulfinert-treated tubes for sulfur compounds. When flow rates are low and gas residence times are long, it has been shown that only the use of electropolis or electropolis/Silconert tubes provides representative results for the gas analyzed.

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\n","protected":false},"excerpt":{"rendered":"

Sample transfer lines for process analyzers very often require special tubes. The starting point for the tubes offered by SOCLEMA is an ASTM-standard tube whose characteristics have been improved to increase resistance to corrosion, drying out or adsorption and desorption. Using unsuitable tubing [...]

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