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LM Testing
LM Testing— Get Official Lighting Performance Certification
Get certified LM ratings for your lighting products to ensure brightness and illuminance standards compliance for quality assurance and market acceptance.
Same-Day Testing Schedule
All Lighting Categories Covered
Lowest Testing Cost
Expert Laboratory Support
Products Tested
Definition & Full Form
What is LM Testing?
LM Testing (Luminous Intensity and Illuminance Testing) is the official certification process that evaluates the light output performance, brightness levels, color temperature, and illuminance quality of your lighting products. LM testing is conducted by NABL-accredited testing laboratories following international standards (IES, IEC, and BIS guidelines) that measure the photometric properties and lighting efficiency of LED fixtures, bulbs, lamps, and luminaires. Once your lighting product obtains LM testing certification, you unlock multiple benefits including compliance with international lighting standards for global market entry, enhanced product quality credibility with customers and distributors, eligibility for government tenders and green building projects, proof of energy efficiency and performance claims, and access to premium lighting markets. The LM testing cost is minimal when obtained through our expert guidance, and testing can be conducted at authorized NABL-accredited laboratories across India.
Eligibility
LM Testing Standards & Parameters
To understand LM testing requirements, your lighting product must meet these criteria:
Product Category
LED fixtures, bulbs, lamps, luminaires, streetlights, or any light-emitting product
International Standards Compliance
Products must comply with IES LM-79, IEC 60969, IEC 62471, and BIS IS 13032 standards
Photometric Parameters
Testing measures luminous intensity, color temperature, color rendering index, and light efficiency
Performance Verification
Lighting output must meet manufacturer's claimed specifications and efficiency standards
Safety Compliance
Products must have no hazardous light emissions or color rendering defects
Dual Certification Possible
Products can be tested for both performance (LM) and safety (electrical safety) compliance
Why Every Lighting Manufacturer Needs LM Testing
Global Market Compliance
Meet international LM testing standards required by overseas buyers—certification for exports to EU, USA, and Asian markets
Performance Verification
Verify your lighting product's actual brightness, color quality, and efficiency—validate manufacturer claims with third-party testing
Product Credibility
Display official LM test results in product specifications—build customer confidence in lighting performance and quality
Government Tender Eligibility
Become eligible for government lighting projects, smart city tenders, and municipal procurement on GeM portal with certified LM ratings
Energy Efficiency Proof
Demonstrate energy efficiency and cost savings potential—qualify for green building certifications and environmental compliance programs
Premium Market Access
Certified lighting products command higher prices and market acceptance—increased profitability and competitive advantage in premium segments
Testing Process
How to Get LM Testing Certification
Documentation
Documents Required for LM Testing
The following documents are typically required for LM testing certification:
Product Specification Sheet with claimed performance
Technical Design Drawing & Component Details
Product Sample (minimum 2-3 units as per testing requirements)
Power Supply Specifications (voltage, frequency, wattage)
Operating Temperature & Environmental Conditions
Color Temperature & CRI Specifications
Intended Application & Use Environment
Manufacturing Process & Quality Control Details
Previous Test Reports (if any from other labs)
Safety Certification Details (electrical safety compliance)
Why Lighting Manufacturers Trust Us for LM Testing
Fast Turnaround
Most LM testing reports issued within 7-14 days. Our laboratory prioritizes lighting product testing with accelerated schedules without compromising accuracy.
NABL Accredited Photometric Lab
Our testing laboratory is NABL-accredited with specialized photometric equipment—reports accepted globally by lighting manufacturers, distributors, and regulatory bodies.
Expert Photometric Engineers
You get dedicated photometric specialists with expertise in lighting science—not just technicians, but experienced professionals in lighting measurements and standards.
Transparent Pricing
We clearly communicate LM testing cost upfront—no hidden fees. Pricing is based on product complexity, number of test parameters, and color variations tested.
Accurate Photometric Data
Our ISO 17025-certified laboratory ensures precise, repeatable, and internationally recognized photometric measurements backed by strict quality protocols.
Complete Technical Support
We don't just test products. We provide pre-testing consultation on performance optimization, help interpret results, and assist with product modifications if needed for specification compliance.
Frequently Asked Questions
Frequently Asked Questions About LM Testing
What is LM testing and why is it important for lighting products?
LM testing (Luminous Intensity & Illuminance Testing) measures actual light output, brightness, color quality, and efficiency of your lighting product. It’s critical for validating manufacturer claims, ensuring customer satisfaction, meeting government standards, and accessing premium markets. Third-party LM testing provides credibility that products deliver promised performance.
What is the difference between LM testing and electrical safety testing?
LM testing measures photometric performance (brightness, color quality, efficiency) while electrical safety testing verifies electrical safety (voltage isolation, earthing, insulation). Both are important—LM testing ensures the light works as claimed while safety testing ensures it doesn’t cause electrical hazards. Many manufacturers get both certifications.
What is the LM testing cost in India?
LM testing cost varies based on product type, complexity, and number of color variants. Our professional fees are affordable and transparent—typically ₹7,000 to ₹25,000 depending on lighting product category. NABL accreditation and photometric laboratory charges are included. Detailed quote provided after product assessment.
How long does LM testing take for LED fixtures?
Once your LED fixture samples are received, LM testing is typically completed within 7-14 working days. Simple products like LED bulbs may be tested faster (5-7 days) while complex luminaires with multiple features may take 14-21 days.
What are common LM testing parameters measured?
Common parameters include—Luminous Intensity (candelas), Luminous Flux (lumens), Color Temperature (Kelvin), Color Rendering Index or CRI (0-100), Correlated Color Temperature (CCT), Power Consumption (watts), and Luminous Efficacy (lumens per watt).
Is NABL accreditation mandatory for LM testing reports?
For government tenders, exports, and premium market segments—yes, NABL accreditation is mandatory. Non-accredited LM testing reports may not be accepted by international buyers, distributors, or government procurement authorities. We ensure all testing is NABL-accredited.
Can I test imported LED products at your laboratory?
Yes, imported LED fixtures, bulbs, and lighting products can be tested at our NABL laboratory. The LM test report will be valid for product specifications, resale compliance, and marketing documentation. For government projects, check specific tender requirements about origin of testing.
What happens if my product fails LM testing?
If your product fails to meet specified parameters, we provide detailed analysis of deficiencies. You can modify product design, materials, or driver circuitry, then resubmit for retesting. We offer technical consultation on improvements needed. Retesting cost is charged separately.
Do I need LM testing for every color variant of LED products?
Yes, if your LED product comes in different color temperatures (warm white, cool white, daylight) or color options, each variant should be tested separately. The photometric properties and CRI values may differ between color variations. We test all variants for comprehensive certification.
How often should lighting products be retested?
If product design, components, or manufacturing process changes significantly, retesting is recommended. For annual compliance certifications in government contracts, many manufacturers retest yearly. If no design changes are made, initial LM testing remains valid for product specifications indefinitely.
Can I claim energy efficiency based on LM testing results?
Yes, LM testing provides official luminous efficacy data (lumens per watt) which proves energy efficiency. You can use this data in marketing claims, energy labels, and green building certifications. This data helps customers understand actual power consumption versus light output.
What is the difference between IES LM-79 and IEC testing standards?
Both IES LM-79 and IEC 60969 measure similar photometric parameters with slightly different protocols. IES LM-79 is more commonly used for LED products in USA and India. IEC standards are preferred for EU compliance. Our laboratory can test against either standard based on your market requirements.
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