Gas Chromatograph Optical Window
Sapphire windows for flame ionization detectors (FID) in GC systems (9027.90 optical components), transmitting UV for ionization efficiency. Withstands 400°C combustion temperatures. Parts of optical chromatographic instruments.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general optical elements not GC-specific
Dedicated detector windows vs generic prisms/lenses.
If ceramic windows for laboratory use
Material composition overrides function for ceramics.
Not sure which classification is right?
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Import Tips & Compliance
• Certify sapphire thermal shock resistance and UV transmission >90% at 200nm
• Document exact FID detector model compatibility and mounting specifications
• Include gas-tight seal test results for pressurized detector environments
Related Products under HTS 9027.90.64.00
Spectrophotometer Quartz Cuvette
Precision quartz cuvettes designed for use in UV-Vis spectrophotometers of subheading 9027.30 to hold liquid samples during absorbance measurements. Made from high-purity quartz for optical transparency in UV range, these cuvettes are essential accessories for accurate spectroscopic analysis. Classified under 9027.90.64.00 as parts of optical analysis instruments.
Refractometer Prism Assembly
Sapphire prism assemblies for Abbe refractometers (9027.20) that measure refractive index through critical angle optics. These precision-ground prisms provide the optical interface for sample analysis in food, pharmaceutical, and chemical testing. Falls under 9027.90.64.00 as dedicated parts of optical refractometers.
Polarimeter Sample Cell
Glass sample cells with precise path lengths (10mm, 20mm, 50mm) for optical polarimeters (9027.50) measuring optical rotation. Features anti-reflective coatings and temperature control jackets for pharmaceutical sugar analysis. Classified as 9027.90.64.00 parts of optical polarimetry instruments.
Fluorometer Flow Cell
Quartz flow cells for fluorescence spectrophotometers (9027.30) with sub-micron path lengths for continuous sample analysis. Black-coated exteriors minimize stray light in sensitive fluorescence detection. 9027.90.64.00 classification for optical fluorometer accessories.
Colorimeter Calibration Filter Set
Certified colored glass filter sets for colorimeter (9027.30) wavelength and absorbance calibration per NIST standards. Filters at 436nm, 546nm, 660nm ensure instrument accuracy for water quality testing. Parts of optical analysis instruments under 9027.90.64.00.
Turbidimeter Light Shield Assembly
Black Delrin light shield assemblies for nephelometric turbidimeters (9027.30 optical type) preventing ambient light interference. Precision alignment features ensure LED light path integrity. Classified 9027.90.64.00 as optical instrument accessories.