BIS Certification for Tin Ingots (IS 26:2024)

The Ministry of Mines, Government of India, is strengthening industrial quality and safety by introducing the Tin Ingot Quality Control Order (2025). As per this mandate, all tin ingots sold in the Indian market must adhere to Indian Standard IS 26:2024 and bear the BIS Standard Mark.

The Bureau of Indian Standards (BIS), India’s official standards authority, grants BIS certification to tin ingot manufacturers under Scheme-I of Schedule-II of the BIS Conformity Assessment Regulations, 2018. This guide provides manufacturers and stakeholders a detailed overview of IS 26, the certification process, documentation requirements, and how organizations like Absolute Veritas can support your BIS compliance journey.

What is BIS Certification for Tin Ingots?

The BIS certification for tin ingots ensures that products meet the prescribed standards for quality and safety under IS 26:2024. It is mandatory for all tin ingot manufacturers who wish to sell their products in the Indian market. The certification process enhances consumer confidence and ensures product reliability, while also supporting both domestic and international trade.

Scope of IS 26:2024

Indian Standard IS 26 outlines the specifications for virgin tin ingots, including chemical composition, shape, weight, and refining methods. It does not, however, cover refined secondary tin, which is regulated under IS 4280:1970.

• Applicable to refined tin produced through fire refining, vacuum refining, or electrolytic refining methods.

• Includes tin ingots manufactured from both primary ore and secondary raw materials.

• Allows manufacturer discretion on ingot shape/mass unless otherwise agreed with the buyer

Major Features of IS 26 Tin Ingot Specification

1. Chemical Composition: The standard classifies tin into six purity grades, with the highest being Sn99.99, which permits just 0.01% antimony and 0.005% bismuth impurities. Testing procedures are specified in IS 1940 or other approved instrumental methods.

2. Manufacturing Process: Tin ingots can be manufactured using fire refining, vacuum refining, or electrolytic refining techniques.

3. Shape and Weight: The standard typically prescribes a weight of 25 kg ±1.5 kg per ingot, though custom agreements with buyers are allowed.

4. Grades of Tin Ingots: Sn99.75, Sn99.85, Sn99.90, Sn99.93, Sn99.95, Sn99.99,

IS 26 Quality Assurance and Testing Requirements

To obtain and maintain BIS certification under IS 26, manufacturers must adhere to a comprehensive quality control plan. Key points include:

• Establishing an in-process quality assurance system

• Maintaining regular testing records

• Utilizing cluster-based or shared testing facilities, particularly beneficial for MSME manufacturers.

• Testing at BIS-recognized or NABL-accredited labs

• Guaranteeing accurate placement of the BIS Standard Mark on each ingot and its accompanying test certificate.

• Disposing of non-conforming products according to BIS guidelines

Documents Required for Tin Ingots

Manufacturers applying for BIS Certification for tin ingots under IS 26 must prepare the following documents:

• Factory Premises Documents

• List of Machinery & Equipment

• GST Registration Certificate

• Detailed Production Process Flowchart

• Udyam Aadhaar (for MSMEs)

• List of Raw Materials

• Factory Layout & Plant Location

• Owner Identification Proof

• Trademark/Brand Name Registration Certificate

Also Check: Update on the Reimbursement Scheme for Testing & Certification Charges for Start-ups and Telecom MSEs

BIS Certification Process for Tin Ingots

1. Application Submission: Submit your application online through the BIS portal, providing product information and quality control details.

2. Factory Inspection: BIS officials inspect the manufacturing site for compliance with IS 26 standards.

3. Product Testing: Samples of tin ingots are dispatched to BIS-authorized laboratories for testing and analysis.

4. Review and Licensing: If the samples pass and the factory complies with BIS norms, a license is granted.

5. Standard Mark Usage: Once certified, the manufacturer may legally affix the BIS Standard Mark on all qualifying products.

Benefits of BIS Certification for Tin Ingots

• Boosts product credibility in both domestic and global markets

• Ensures consumer safety and material reliability

• Required for legal sale of tin ingots in India (post-2025 implementation)

• Supports participation in government tenders

• Facilitates brand trust and market expansion

Implementation Timeline of Tin Ingot QCO (IS 26:2024)

• The Tin Ingot Quality Control Order (QCO) will come into force 6 months after publication in the Official Gazette.

• Export-only products are exempt.

• Stakeholders can provide feedback within 60 days of notification.

Conclusion

BIS certification under IS 26:2024 is a crucial compliance requirement for tin ingot manufacturers aiming to thrive in the Indian market. Ensuring product quality, safety, and regulatory compliance not only builds brand trust but also opens doors to wider trade opportunities. Get started today and ensure your products carry the BIS Standard Mark for maximum credibility and reach.

For more information please contact us at cs@absoluteveritas.com