HSN code · Customs Tariff of India · GST rate
84212110 is the 8-digit HSN code for “For filtering or purifying water: Ion exchanger plant or apparatus”: tariff item 8421 21 10 under heading 8421 of the Customs Tariff of India. The GST rate depends on the goods: the entries for this code carry 5% or 18%. Search a code or product below, or copy the code for your invoice.
This code
Chapter 84Heading 8421Sub-heading 8421 21Tariff item 8421 21 10
For filtering or purifying water: Ion exchanger plant or apparatus
Tariff item 8421 21 10 · Heading 8421 · Chapter 84, Customs Tariff of India
The code
What the code covers in the Customs Tariff of India, and the GST rate entries that apply to it.
842121108 digits: 84 + 21 + 21 + 108421 21 10Ion exchanger plant or apparatusHow to read it
An HSN code is built in layers. Each pair of digits narrows the one before it: 2 digits = chapter, 4 = heading, 6 = sub-heading, 8 = tariff item in the Customs Tariff of India.
The broadest layer. Chapter 84 covers nuclear reactors, boilers, machinery and mechanical appliances, parts thereof. It sits in Section XVI, machinery and mechanical appliances; electrical equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles.
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases.
For filtering or purifying water. Between the heading and this item the tariff also prints the line “Filtering or purifying machinery and apparatus for liquids”.
Ion exchanger plant or apparatus. The full 8-digit code used in the Customs Tariff of India and on invoices that show the complete HSN.
Unit of quantity: u.
GST rate
6 entries of the GST rate notifications name this code's heading or particular goods in its chapter, and they carry 5% or 18%. No single rate is stated for 84212110 here; read each entry's official description against your goods.
| Entry | Tariff column, as printed | Description, as printed | GST rate |
|---|---|---|---|
| Entry that cites 8421 (this code's heading) | |||
| Schedule II, S. No. 410Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 8421 | Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases | 18%IGST 18% · CGST 9% · SGST/UTGST 9%From 22 September 2025 |
| Entries for particular goods in chapter 84 | |||
| Schedule I, S. No. 437Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 84, 85 or 94 | Following renewable energy devices and parts for their manufacture:- (a) Bio-gas plant; (b) Solar power-based devices; (c) Solar power generator; (d) Wind mills, Wind Operated Electricity Generator (WOEG); (e) Waste to energy plants / devices; (f) Solar lantern / solar lamp; (g) Ocean waves/tidal waves energy devices/plants; (h) Photo voltaic cells, whether or not assembled in modules or made up into panels. Explanation:- If the goods specified in this entry are supplied, by a supplier, along with supplies of other goods and services, one of which being a taxable service specified in the entry at S. No. 38 of the Table mentioned in the notification No. 8/2017- Integrated Tax (Rate), dated 28th June, 2017 [G.S.R. 683(E)], the value of supply of goods for the purposes of this entry shall be deemed as seventy per cent. of the gross consideration charged for all such supplies, and the remaining thirty per cent. of the gross consideration charged shall be deemed as value of the said taxable service | 5%IGST 5% · CGST 2.5% · SGST/UTGST 2.5%From 22 September 2025 |
| Schedule I, S. No. 479Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 90 or 84 | Disposable sterilized dialyzer or micro barrier of artificial kidney | 5%IGST 5% · CGST 2.5% · SGST/UTGST 2.5%From 22 September 2025 |
| Schedule II, S. No. 386Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 84 | Parts suitable for use solely or principally with fixed Speed Diesel Engines of power not exceeding 15HP | 18%IGST 18% · CGST 9% · SGST/UTGST 9%From 22 September 2025 |
| Schedule II, S. No. 387Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 84 or 85 | Parts suitable for use solely or principally with power driven pumps primarily designed for handling water, namely, centrifugal pumps (horizontal and vertical), deep tube-well turbine pumps, submersible pumps, axial flow and mixed flow vertical pumps | 18%IGST 18% · CGST 9% · SGST/UTGST 9%From 22 September 2025 |
| Schedule II, S. No. 473Notification No. 9/2025-Integrated Tax (Rate)Central Tax: Notification No. 9/2025-Central Tax (Rate) | 84 or 85 | E-waste Explanation.- For the purpose of this entry, E-waste means electrical and electronic equipment listed in Schedule I of the E- Waste (Management) Rules, 2016 (published in the Gazette of India vide G.S.R. 338 (E) dated the 23rd March, 2016), whole or in part if discarded as waste by the consumer or bulk consumer | 18%IGST 18% · CGST 9% · SGST/UTGST 9%From 22 September 2025 |
Each entry applies only to the goods it describes. If none describes your goods, the entry for goods not specified elsewhere applies: Schedule II, S. No. 639, 18%: “Goods which are not specified in Schedule I, III, IV, V, VI or VII”.
Rates are IGST on inter-State supplies; on supplies within a State the same rate is split equally between CGST and SGST/UTGST, under Notification No. 9/2025-Central Tax (Rate) with the same S. Nos.
On your invoice
Notification No. 78/2020-Central Tax dated 15.10.2020 sets the minimum number of HSN digits on B2B tax invoices from 1 April 2021, by the business's aggregate turnover in the previous year.
Businesses with aggregate turnover up to ₹5 crore in the previous year show at least the heading, 8421, on B2B tax invoices.
Above ₹5 crore, at least the sub-heading, 842121, goes on B2B tax invoices.
Many businesses show the full 84212110, the tariff item itself.
Rate history
Rate depends on the goods
Notification No. 9/2025-Integrated Tax (Rate) and No. 9/2025-Central Tax (Rate) dated 17.09.2025 (as corrected 18.09.2025), which superseded Notification No. 1/2017-Integrated Tax (Rate) dated 28.06.2017. The 6 entries in force from this date are listed in the GST rate section above.
Earlier rates under Notification 1/2017 are not shown here
Notification No. 1/2017-Integrated Tax (Rate) dated 28.06.2017 applied until it was superseded by Notification 9/2025.
Related codes
Heading 8421, centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases. The codes below sit closest to 84212110 in the Customs Tariff of India: the other tariff items under heading 8421. Each is shown in the official wording and has its own page with its GST rate entries. Use the search above for any other code.
84212120Tariff item 8421 21 2084212190Tariff item 8421 21 9084212300Tariff item 8421 23 0084212900Tariff item 8421 29 0084213100Tariff item 8421 31 0084213200Tariff item 8421 32 0084213920Tariff item 8421 39 2084213990Tariff item 8421 39 9084212110, this page's code, is tariff item 8421 21 10 under the same heading. 2 of the codes listed share its sub-heading, 8421 21.
Questions
It depends on the goods: 6 entries of the rate notifications name this code's heading or particular goods in its chapter, and they carry 5% or 18%: Schedule II, S. No. 410 (18%); Schedule I, S. No. 437 (5%); Schedule I, S. No. 479 (5%); Schedule II, S. No. 386 (18%); Schedule II, S. No. 387 (18%); Schedule II, S. No. 473 (18%). Each entry applies only to the goods it describes; if none describes your goods, Schedule II, S. No. 639 (18%) applies. The full wording of every entry is in the GST rate section above.
At least 4 digits if your aggregate turnover in the previous year was up to ₹5 crore, and at least 6 digits above ₹5 crore, on B2B tax invoices (Notification No. 78/2020-Central Tax dated 15.10.2020, from 1 April 2021). For this code that is 8421 or 842121; many businesses use the full 84212110.
Tariff item 8421 21 10 of the Customs Tariff of India, First Schedule: “Ion exchanger plant or apparatus”, under sub-heading 8421 21 (“For filtering or purifying water”), the line “Filtering or purifying machinery and apparatus for liquids”, heading 8421 (“Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases”), in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances, parts thereof), Section XVI (machinery and mechanical appliances; electrical equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles). Unit of quantity: u.
About this page
The section, chapter, heading, sub-heading and tariff item on this page are taken from the Customs Tariff of India, First Schedule (Customs Tariff Act, 1975), CBIC edition as on 30 June 2024, with the tariff-line changes of the Finance (No. 2) Act 2024, Finance Act 2025 and Finance Act 2026 applied. The GST entries are taken from Notification No. 9/2025-Integrated Tax (Rate) and No. 9/2025-Central Tax (Rate) dated 17.09.2025 (as corrected 18.09.2025), as amended by Notifications 19/2025 and 01/2026; exemptions: Notification No. 10/2025.
This is reference information for classification and invoicing. It is not advice on how your own goods should be classified, and the official tariff and notifications prevail if the two ever differ. A change in the tariff or in a rate notification re-opens this page for an update.
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