How to check an Original ISI CML Number Online ?
With counterfeit products being a common occurrence these days, it is all the more important to determine the authenticity of products before buying them. A major development, the Bureau of Indian Standards (BIS) has introduced a standardised 10-digit Conformity Mark Licence (CML) number format which will facilitate easier verification by consumer, manufacturer and stakeholders of BIS certified products. Everything you need to know about the new CML numbering system and how to check it online.
What Is a CML Number and Why Does It Matter?
A Conformity Mark Licence (CML) number is a unique number given by BIS to a manufacturer who is authorized to affix ISI mark on his product. One of the most recognised quality marks in India, ISI guarantees the safety, quality and performance of a product against the applicable Indian Standards (IS).
A valid CML of a product indicates three major points: the product is manufactured under a valid BIS licence, the product meets Indian Standards and the manufacturer has gone through the required audits and certifications. This means that the consumer can rely on the product and has confidence in the reliability of it. In a business context, it relates to compliance with regulations and mitigating risks of liability arising from fraud.
It is important that a user checks a CML number before any purchase or distribution of a BIS marked product to ensure that the product is not a counterfeit ISI marked product, to prevent fraud and to identify the manufacturer of the product and the history of its product.
New 10-Digit CML Number Format
BIS recently implemented a standard format for the identification code of all product certification licences with a 10-digit code. In the past licence numbers were issued in multiple lengths, leading to inconsistencies in the system. The new format will have old shorter numbers with leading zeroes added to make them 10 digits. For instance an old licence number 1234567 is now 0001234567.
This is only an administrative change and does not impact on the validity or certification of any product or licence. During the transition, BIS has assured that both the old and the new format with the 10 digits will be used to verify the card and it will provide a seamless process for all concerned.
The advantages of this standardisation are vast. A uniform numbering system will benefit digital verification, by enabling BIS to maintain a cleaner and more efficient certification database, improving product traceability throughout the sectors, and making authentication easier on digital platforms and mobile applications.
Step-by-Step Guide to Verify a BIS CML Number Online
Verifying a CML number is a straightforward process through the BIS official online portal. Follow these steps:
Step 1: Visit the BIS Official Website
Log in to the official BIS portal with your signed up credentials. You can either create an account or retrieve username and password directly from the portal if you're a new user.
Step 2: Navigate to the Product Certification Section
After logging in, find the Product Certification section. All activities relating to BIS Certification, ISI Marking and License Verification are carried out in this area.
Step 3: Select "Verify the BIS Licence"
Click on the "Verify the BIS Licence" option. A verification form will appear, prompting you to enter the relevant product and manufacturer details.
Step 4: Enter the 10-Digit CML Number
Carefully type the 10-digit BIS CML number in the designated field. Ensure accuracy — even a single digit error may return an invalid result.
Step 5: Submit and Review the Results
Submit the form and allow the system to process your query. If the licence is valid and active, the portal will display key details including the manufacturer's name, the applicable Indian Standard (IS) number, the manufacturing location, the product scope, and the licence validity status. If no record is found, the licence may be invalid, expired, or counterfeit.
Step 6: Use the BIS Care App for Quick Verification
In addition to the website, consumers and businesses can verify CML numbers through the BIS Care mobile application, which offers a convenient, on-the-go authentication option. The BIS Helpdesk is also available for further guidance and support.
What BIS's Digital Platform Offers?
Beyond CML verification, the BIS online platform is a comprehensive digital hub for manufacturers, applicants, and consumers. Users can monitor application status, identify and address deficiencies, apply for new certifications, file complaints, and apply for licence renewals — all from a single portal. These services help businesses stay compliant with evolving regulations and maintain robust product quality and safety standards.
Key Takeaway for Manufacturers and Businesses
Manufacturers holding BIS licences should familiarise themselves with the new 10-digit format and progressively update their documentation, product packaging, marketing materials, and compliance records accordingly. While there is no immediate disruption — BIS has assured that both old and new formats will be recognised during the transition — proactive adoption of the updated format will ensure seamless verification and continued regulatory compliance.
The shift to a standardised 10-digit CML number system reflects BIS's broader commitment to modernisation, digital governance, and consumer protection — a crucial step toward a more transparent and trustworthy certification ecosystem in India.