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- IS 19348:2025 is India’s BIS for tempered screen glass used on mobiles, tablets, laptops, and wearables.
- Sets rules for size accuracy, light clarity (≥89% normal, ≥59% privacy), and no major defects like bubbles or scratches.
- Requires minimum strength of 500 MPa surface compression and 200 MPa bend resistance.
- Packaging must show manufacturer details, batch number, thickness, date, and the BIS mark.
- BIS certification is mandatory before selling in India, with lab testing and factory audits.
Introduction
IS 19348:2025 is the official Bureau of Indian Standards (BIS) specification that relates to the quality, safety, and performance of tempered glass screen protectors in India. The standard will cover protectors for mobile phones, tablets, laptops, and wearables, determining that at the manufacturing level they meet the strictest requirements possible.
It specifies:
- Dimensional accuracy – the screen protector must be dimensionally accurate, without any gaps or misalignment.
- Light clarity – minimum 89%, for normal glass and minimum 59%, for privacy glass
- Surface clarity – there must not be any bubbles, scratches/defects, cracks, pinholes, or rough edges.
- Mechanical strength – minimum 500 Mpa surface compression strength and minimum 200 Mpa bending strength.
Compliance with IS 19348:2025 means that businesses have to apply for testing at BIS-recognised laboratories with samples. They will also have to endure factory inspection to verify the level of production. Packaging will need to convey company identity, batch number, thickness, manufacturing data, and the BIS Standard
What is BIS Certification for Tempered Glass Screen Protectors?
BIS Certification is an official certification for tempered glass screen protectors to signify compliance with quality and safety regulations for India under IS 19348:2025 issued by Bureau of Indian Standards (BIS).
In simple terms, it is a certification that allows you to sell tempered glass protectors in the Indian market.
what does all that mean?
- Product testing in a BIS recognised lab to measure sizing compliance, light compliance, limited defectives, and mechanical strength.
- Factory inspections to verify production authorities and processes along with QC checks.
- BIS Standard Mark is then placed on the product and packaging.
- It is the law — without certification and the standard mark, there is no tempered glass you can import, sell, or distribute in India.
- For Consumers, it assures them they are purchasing safe, strong and flawless screen protectors, assurance establishes trust and removes uncertainty for brands, along with the risk of penalty.
Understanding IS 19348:2025: The Indian Screen Protector Standard
IS 19348:2025 is the latest standard issued by the Bureau of Indian Standards (BIS) specifically for screen protector glass in India. It sets precise requirements for:
- Hardness and scratch resistance
- Impact resistance and durability
- Transparency and optical quality
- Edge strength and anti-shatter properties
This ensures that every certified product delivers reliable protection while maintaining the user experience. Think of it like a safety net for your phone screen, designed scientifically.
Why BIS Certification Matters for Screen Protectors
BIS for tempered screen glass is a formal confirmation by the Bureau of Indian Standards that the product meets all mandatory requirements of the IS 19348:2025 standard. It checks stringent requirements on size, optical clarity, strength, and checks for visible product defects, especially bubbles, pinholes, and scratches. In India, BIS is not an option; it is a mandatory legal obligation for anyone selling or importing such products.
- Legal Requirement – In India, tempered glass screen protectors must be sold or imported per IS 19348:2025.
- Quality Assurance – It assures that the product meets the BIS product standards with respect to size, optical clarity, strength, and defect-free finish.
- Consumer Trust – The BIS mark provides trust for the consumer for product safety and longevity.
- Market Access – Allows for smooth clearance through customs and acceptance on retail shelves and e-commerce channels.
Key Technical Requirements of IS 19348:2025
Manufacturers must satisfy several criteria in order to comply with the Indian standards for screen protectors:
- The Hardness test – Minimum Mohs hardness must be met to prevent scratching.
- Impact Test – Drop test to simulate accidental phone falls.
- Transparency & Clarity – High optical transmission for clear screen visibility.
- Adhesion & Anti-Shatter – Strong adhesion without bubbles; glass must not shatter dangerously.
- Chemical Resistance – Must resist sweat, cosmetics, and cleaning agents
Eligibility – Who Needs BIS Certification?
BIS Certification under IS 19348:2025 is mandatory for all manufacturers and importers who produce or supply tempered glass protectors to the Indian market. This applies to:
- Manufacturers for tempered glass screen protectors for mobiles, tablets, laptops, and wearable devices.
- Importers bringing screen protectors into India for sale.
- Brand owners selling products under their own label, even if production is outsourced.
- E-commerce sellers and retail chains that market their own branded screen protectors.
Under Indian law, no tempered glass screen protector covered by IS 19348:2025 can be sold in India without BIS certification. The rule ensures that every product meets standards for size accuracy, light clarity, surface quality, and mechanical strength before reaching consumers.
BIS Certification for Tempered Glass Screen Protectors (IS 19348:2025)
First, you need to make sure you comply with the managed process defined in BIS Certification under IS 19348:2025; before you can apply for a BIS certification to sell your tempered glass screen protectors in India. This managed process will ensure that your products conform to the necessary safety, quality and performance characteristics required by the BIS.
The following process will provide you with the steps on how to ensure your getting your certificate.
1. Establish the Applicable Standard
Ensure your product is included within IS 19348:2025, the Bureau of Indian Standards (BIS) standard for tempered glass screen protectors on mobiles and tablets, laptops and wearable devices.
2.Prepare The Technical Document
Collect the necessary information to support the product, i.e. design specifications, material information, manufacturing process flow, test reports (if available), and factory information.
3.Identify a BIS Recognised Laboratory
Determine the BIS approved lab for testing your product as per IS 19348:2025. The lab will check the following:
- Dimensional accuracy
- Light transmittance (≥89% for normal glass, ≥59% for privacy glass)
- Surface defects (bubbles, scratches, cracks, and pinholes)
- Mechanical strength (≥500 MPa surface compression, ≥200 MPa bending resistance based on a 25 mm × 1 mm thick screen protector)
4.Samples for Testing
Send representative samples of the product to the lab you selected. The samples must be obviously packed according to the BIS requirement and labelled clearly.
5.Facility Inspection by BIS Officials
BIS Officials will inspect the manufacturing unit to ensure production capability, quality control measures are implemented and more importantly that the product complies with the IS 19348:2025 Standards.
6.Completed Evaluation of Report and Findings
BIS will review the lab test reports, along with inspection findings to ensure the product complies – as required.
Benefits of BIS Certification for Businesses
Getting BIS certification is not just about following rules — it directly helps your business grow and build trust. Here’s why it matters:
- Legal entry into the Indian market – Without BIS approval, your shipments can get stuck at customs or even be banned. With certification, you get a smooth pass to sell anywhere in India.
- Stronger customer confidence – When people see the BIS mark, they instantly believe the product is genuine and safe. That trust turns into higher sales and repeat customers.
- Easy acceptance by retailers and e-commerce – Big platforms like Amazon, Flipkart, and major offline chains give preference to BIS-certified products, which means faster approvals and wider reach.
- Lower risk of returns and complaints – Since certified products are properly tested, they perform better. This reduces refunds, saves money, and keeps your brand image strong.
- Clear edge over uncertified competitors – In a market full of cheap, low-quality options, having BIS certification shows that your brand is serious about quality. It helps in winning bulk orders, B2B deals, and even government contracts.
Why Choose Diligence Certifications as Your Best BIS Consultant?
For many businesses, BIS compliance looks complicated — multiple forms, strict testing, and long approvals. Diligence Certifications, as a trusted BIS consultant, makes this process simple and reliable.
- Complete Guidance: From lab testing to final approval, every step is managed by our team.
- A Proven Track Record: We’ve effectively assisted countless businesses in the electronics, glass, and consumer products sectors in becoming BIS compliant.
- Faster Approvals: With accurate filing and submissions, approvals are typically completed in 21–30 working days.
- No Mistakes: Our consultants will avoid the common mistakes that lead to rejections and delays.
- Business-First Consultancy: We consider your products for market readiness, retail availability, or e-commerce.
Conclusion
Compliance with IS 19348:2025 and gaining BIS certification for screen protectors is no longer an option for serious manufacturers. It provides a quality, reliability and durability assurance that meets much of the expectations of consumers in India. Brands that comply with these Indian standards for screen protectors, will be in a credible position that reduces the potential for legal or liability issues and increases market demand for screen protectors.
For start-ups and retailers looking to introduce or upgrade a screen protector line, working with approximately a leading certification partner like Diligence Certifications would help with compliance quickly and strengthening brand reputation.
Frequently Asked Questions
What is IS 19348:2025?
It is the India Standard Regulatory specification for tempered glass screen protectors for sale in India. It specifies the size, clarity, strength, and limits for defects.
Why is a BIS certification of worry regarding screen protectors?
A BIS certification assures the consumer that the product's safety & quality requirements have been met before it can be sold in India.
What products are covered under IS 19348:2025?
All chemically tempered or strengthened glass screen protectors for mobile, tablet laptop, wearable, and similar devices.
Who issues the BIS Certification?
The Bureau of Indian Standards, which is a body of the Government of India, incorporated under Bureau of Indian Standards Act, 2016.
Can I sell screen protectors in India without BIS certification?
No, any product without BIS certification is not legally permissible to sell, import or distribute in India.
What is the process to be granted BIS certification?
The manufacturers products to undergo product testing in a BIS approved laboratory and then they inspect the manufacturer.
What tests are done on screen protectors?
There are scope of testing including dimensional tolerance, light transmission, defect checks, surface compression, and material bending strength.
How long is the BIS certification process?
Typically 30–45 days depending on the timing for testing and inspection.
What Do I need to put on a BIS-certified screen protector?
Manufacturer name or code, batch number, thickness, production date, along with the BIS Standard Mark.
What value does BIS certification offer to its business clients?
It allows for a seamless customs clearance process, builds consumer confidence, reduces complaints, gives opportunities to list on e-commerce platforms.
