Thermal Conductivity Detector Filament Assembly
Tungsten-rhenium filament assembly for TCD detectors in gas chromatographs (9027.20.50), measuring thermal conductivity differences. Replaceable electrical sensing element. Classified 9027.90.5625.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wirewound resistors
Fixed resistors if thermal sensing secondary to resistance function.
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Import Tips & Compliance
• Provide filament resistance curves and gas compatibility data
• Certify for carrier gas types (He, H2, N2)
Related Products under HTS 9027.90.56.25
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Precision fan motor circulating air in chromatography oven columns for uniform heating in 9027.20.50 instruments. Electrical accessory essential for temperature accuracy. Under 9027.90.5625 classification.
Split/Splitless Injector Body
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Chromatography Oven Temperature Sensor
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GC Injection Port Liner
A consumable quartz liner for the injection port of gas chromatographs (HTS 9027.20.50), essential for sample vaporization in chemical analysis. Made of high-purity materials to prevent contamination during analysis. Classified as a part under 9027.90.5625 due to its exclusive use in these electrical analytical instruments.
Gas Chromatograph Column Heater Module
Modular heating element for maintaining temperature gradients in GC capillary columns, integral to instruments of subheading 9027.20.50. Ensures reproducible separation results in physical/chemical analysis. Falls under 9027.90.5625 as an electrical part principally used with these apparatus.
Mass Spectrometer Interface Kit for GC
Transfer line and heater kit connecting gas chromatographs (9027.20.50) to mass spectrometers for combined GC-MS analysis. Maintains sample integrity during ionization transition. Classified in 9027.90.5625 as accessory principally for these chemical analysis instruments.