BIS Certification for Refined Zinc as per IS 209:2024 – Complete Guide

BIS (ISI) Certification is now mandatory for various products in India to ensure safety, reliability, and quality. One such critical product is refined zinc, used extensively in industries like galvanization, die casting, and alloy manufacturing.

To protect consumers and promote high-quality production, the Bureau of Indian Standards (BIS) has enforced IS 209:2024 – the Indian Standard for refined zinc ingots. Under this, ISI-marked refined zinc is mandatory for sale and distribution within India (excluding exports).

In this blog, we’ll explore everything you need to know about ISI Certification for Refined Zinc, including the purpose of IS 209, certification requirements, compliance process, and benefits for manufacturers.

What is IS 209:2024 – Refined Zinc Specification?

IS 209:2024 is an Indian Standard that defines the technical specifications for primary and secondary refined zinc ingots. It includes:

• Five zinc grades based on zinc purity: a) Zn99.995 b) Zn99.99 c) Zn99.95 d) Zn99.5 e) Zn98.65

• Applications: Used for die casting, galvanization, and alloying in various industrial processes.

• Chemical Composition Specifies acceptable levels of impurities like lead (Pb), cadmium (Cd), iron (Fe), aluminum (Al), copper (Cu), and tin (Sn).

• Casting Method: Zinc ingots can be produced using continuous or non-continuous casting. Shapes such as slabs, tiles, or plates are permitted if agreed between buyer and manufacturer.

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Scope of IS 209:2024 – What It Covers

IS 209 covers virgin refined zinc ingots and excludes:

• Secondary zinc, governed by IS 4699.

• Zinc for galvanizing, covered under IS 13229.

s per the Refined Zinc (Quality Control) Order, 2025, all zinc sold or distributed in India (excluding exports) must comply with IS 209:2024 and bear the BIS Standard Mark. This order takes effect six months from its date of publication, giving manufacturers time to comply.

Importance of BIS Certification for Refined Zinc

Getting BIS certification for refined zinc under IS 209:2024 provides several advantages:

• Mandatory compliance for selling in the Indian market.

• Increased market trust and consumer confidence in certified products.

• Higher demand and competitive edge over non-certified products.

• Faster and broader market access across India.

• Alignment with national standards, improving quality and reliability.

Key Features and Specifications Under IS 209

• Covers refined zinc ingots accepted both domestically and internationally.

• Surface Quality: Zinc ingots must be free from corrosion and extraneous materials.

• Each ingot or bundle must be clearly marked with: Grade of zinc Cast or lot number Manufacturer’s name or trademark Weight of the ingot or bundle

• Re-melted secondary zinc (via sweating) does not qualify under IS 209.

Quality Assurance Requirements for Manufacturers

To obtain BIS certification under IS 209, manufacturers must:

• Implement a quality assurance plan for production and testing.

• Maintain testing records and ensure regular in-process inspections.

• MSME units may utilize cluster-based testing facilities or NABL-accredited labs.

• Large-scale manufacturers should maintain in-house labs for routine testing.

• The Standard Mark (ISI logo) must be legibly marked on every ingot or included in test certificates.

BIS Certification Process for Refined Zinc Ingots in India

1. Apply Online: Submit the BIS application on the official BIS portal with all necessary documents.

2. Document Verification: Ensure all paperwork is complete and up to date to avoid delays.

3. Factory Inspection: BIS officials visit the manufacturing site to evaluate production processes.

4. Product Testing: Send samples to BIS-recognized or NABL-accredited labs for testing.

5. Pay Certification Fees: Submit the applicable fees via the BIS portal.

6. Final Approval: Upon successful review of reports and processes, BIS grants the license to use the ISI mark.

Conclusion

ISI (BIS) Certification for Refined Zinc under IS 209:2024 is now essential for manufacturing, distributing, or selling zinc products in India. With increasing regulatory focus on quality control, manufacturers must comply with BIS standards to gain market access and consumer trust.

Whether you're a domestic producer or a foreign manufacturer, obtaining the BIS license for refined zinc ensures legal compliance, brand credibility, and long-term business growth.

For more detail you can reach us at cs@absoluteveritas.com