Spectroscopy Potassium Nitrate Reference Standard
Spectroscopy potassium nitrate reference standard is a certified reference material of potassium nitrate (KNO3) used for NIR/Raman spectroscopy calibration. It is classified under tariff item 2834.21.00 as a chemically defined compound, provided it is not put up as a certified reference material under heading 38.22.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
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
• Determine if the product is a certified reference material (CRM) with a certificate of analysis; if so, it may be classified under heading 38.22
• If not a CRM, declare it as pure potassium nitrate for laboratory use
• Provide documentation of the product's intended use in spectroscopy
Related Products under Tariff item 2834.21.00
Battery Grade Potassium Nitrate
Battery grade potassium nitrate is an ultra-pure, chemically defined inorganic compound of potassium nitrate (KNO3) used as an electrolyte component in specialty batteries. It meets the requirements of Chapter 28 Note 1 as a separate chemically defined compound, and falls under tariff item 2834.21.00 as a nitrate of potassium.
Food Grade Potassium Nitrate
Food grade potassium nitrate is a purified, chemically defined potassium nitrate (KNO3) used as a curing agent (E252) for preserved meats. It is classified under tariff item 2834.21.00 as a nitrate of potassium, and is not considered a food preparation because it is a single chemical compound.
Industrial Potassium Nitrate for Propellants
Industrial potassium nitrate for propellants is a high-density, chemically defined potassium nitrate (KNO3) used as an oxidizer in black powder and propellant production. It is classified under tariff item 2834.21.00 as a pure inorganic compound, and is not considered a finished explosive product.
Laboratory Potassium Nitrate Solution 30%
Laboratory potassium nitrate solution is a 30% aqueous solution of potassium nitrate (KNO3) used for analytical and calibration purposes. It falls under tariff item 2834.21.00 as a solution of a chemically defined compound in water, per Chapter 28 Note 1(b).
Pharmaceutical Grade Potassium Nitrate USP
Pharmaceutical grade potassium nitrate USP is a high-purity, chemically defined potassium nitrate (KNO3) meeting USP standards, used in dental desensitizers and limited pharmaceutical applications. It is classified under tariff item 2834.21.00 as a pure inorganic compound, not a medicament.
Potassium Nitrate Crystals
Potassium nitrate crystals are pure, chemically defined potassium nitrate (KNO3) in crystalline form, used as a fertilizer and in pyrotechnics. It falls under tariff item 2834.21.00 as a nitrate of potassium, distinct from ammonium nitrate or other nitrates.