Laboratory Chromatography Tubing
Laboratory chromatography tubing is a precision welded stainless steel tube with a circular cross-section and an outer diameter of 1/16 inch, designed for high-performance liquid chromatography (HPLC) systems. Its wall thickness is less than 1.65 mm and it contains a high nickel content, which qualifies it under tariff item 7306.40.00 for other welded stainless steel tubes of circular cross-section. This tubing ensures leak-free connections and chemical resistance essential for analytical laboratory applications.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the tubing is cold-drawn or cold-rolled (seamless) rather than welded
Seamless stainless steel tubes of circular cross-section are classified under heading 7304, not 7306 which covers welded tubes.
If the tubing is imported with threaded or flanged fittings attached
Tubes fitted with fittings may be classified as tube or pipe fittings under heading 7307.
If the tubing is part of a complete chromatography instrument
Instruments and apparatus for physical or chemical analysis fall under Chapter 90, which takes precedence over parts of general use.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the tubing meets the specified dimensions (wall <1.65 mm) and nickel content (>0.5%) to confirm classification under 7306.40.00
• Have a certificate of analysis from the manufacturer ready to present to the CBSA if requested
• Verify whether the tubing qualifies for preferential tariff treatment under a free trade agreement by confirming the country of origin
Related Products under Tariff item 7306.40.00
0.25 Inch OD 304 Stainless Steel Capillary Tubing
Ultra-thin welded 304 stainless capillary tube, 0.25 inch OD, 0.010 inch wall, for gas chromatography. Precision bore for analytical instruments. Falls under tariff item 7306.40.00 as a welded, circular cross-section tube of stainless steel.
17-4 PH Stainless Welded Aerospace Tubing
Precipitation hardened 17-4PH welded tube, 0.75 inch OD, 0.028 inch wall, for aircraft hydraulic lines. High strength-to-weight ratio. Classified under 7306.40.00 as a welded, circular cross-section tube of stainless steel.
1 Inch OD 304 Stainless Steel Instrumentation Tubing
Welded 304 stainless tube, 1 inch OD, 0.035 inch wall thickness, for pressure instrumentation. Used in oil & gas gauges. Falls under 7306.40.00 as a welded, circular cross-section tube of stainless steel.
304L Stainless Decorative Handrail Tubing
#1 finish welded 304L tube, 1.5 inch OD, 0.065 inch wall, for architectural handrails. Mirror polish option available. Classified under 7306.40.00 as a welded, circular cross-section tube of stainless steel.
304 Stainless Steel Condenser Tubing
304 stainless steel condenser tubing is a welded thin-wall tube with a circular cross-section, used in heat exchanger condensers for HVAC systems. It has a wall thickness of less than 1.65 mm and is made from grade 304 stainless steel, qualifying it under tariff item 7306.40.00 for other welded stainless steel tubes. The tubing provides good corrosion resistance and thermal conductivity for efficient heat transfer.
304 Stainless Steel Fountain Pen Nib Tubing
304 stainless steel fountain pen nib tubing is a precision welded thin-wall tube with a circular cross-section, designed for use in fountain pen feeds and nibs. It has a wall thickness of less than 1.65 mm and is made from grade 304 stainless steel, qualifying it under tariff item 7306.40.00 for other welded stainless steel tubes. The tubing provides precise dimensional control and corrosion resistance for writing instrument applications.