---
title: "HSN Code for Surface/Interfacial Tension Measuring Instruments | HSN 90278020 GST Rate"
description: "Find HSN and GST Rates for 90278020 related to Surface/Interfacial Tension Measuring Instruments with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-90278020/"
---

# HSN Code 90278020: Surface/Interfacial Tension Measuring Instruments

- [Section 18: Guide to HSN Section 18](https://busy.in/hsn/section-18/)
- [Chapter 90: Optical & Medical Instruments](https://busy.in/hsn/chapter-90/)
- [Sub-chapter 9027: Analytical Instruments](https://busy.in/hsn/sub-chapter-9027/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes - other instruments and apparatus: calorimeters | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 90278020 ?

It includes Hanging Lamps (Electric Ceiling/Wall)

### How should mixed supplies be billed when Surface/Interfacial Tension Measuring Instruments is sold with other items?

Use separate invoice lines per HSN and apply the correct rate per line (e.g., Varies for Surface/Interfacial Tension Measuring Instruments; Nil for exempt items if applicable).

### How much GST applies to Surface/Interfacial Tension Measuring Instruments?

Under HSN 90278020, Surface/Interfacial Tension Measuring Instruments attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### Do e‑way bill and e‑invoice apply for Surface/Interfacial Tension Measuring Instruments?

e‑Way bill is needed above ₹50,000 consignment value (subject to exemptions). e‑Invoicing is turnover‑based (presently AATO > ₹5 crore) for B2B supplies.

### Can we claim ITC on inputs used to trade Surface/Interfacial Tension Measuring Instruments?

If your outward supply is taxable, eligible ITC is available subject to general restrictions. For exempt/Nil supplies, reverse credit per Rule 42.

### Does packaging or labelling change the GST for Surface/Interfacial Tension Measuring Instruments?

For food/agri items, GST can be 5% when not fresh/chilled and sold as pre‑packaged & labelled; otherwise often Nil. For non‑food items, rates depend on the specific sub‑heading.