Spectral Measurement Devices

Leveling the playing field for the LED industry.

Millions of LED products are bought and sold everyday, but not all LEDs are created equal.  UPRtek produces handheld  and portable spectral measurement devices, and we aim to bring this specialized technology to all and assist LED companies in producing, buying and selling with integrity and confidence.

Product Packaging Change Notice

Implementing ESG Commitments with Eco-Friendly Box Packaging

Effective July 2026, the outer packaging for UPRtek handheld spectrometer shipments will gradually transition from the original aluminum carrying case to a high-strength, recyclable eco-friendly paper box, reducing the environmental impact associated with product packaging.

 

UPRtek Passes BSI Third-Party Verification

Advancing ESG and Net-Zero Sustainability Commitments

In June 2026, in the greenhouse gas inventory project, UPRtek officially passed the third-party verification of the British Standards Institution (BSI) and completed the GHG Protocol Report, obtaining the Verification Opinion issued by BSI.

Lastest Article

Film & Cinema Lighting Case Study: Using MK350S Premium to Verify Spectral Accuracy in Professional LED Film Light Production

This case study examines how a leading manufacturer of professional LED film lighting — producing a series of professional LED cinema fixtures — integrated the UPRtek MK350S Premium Handheld Spectrometer into their end-of-line (EOL) photometric testing and calibration workflow.

Spectral Measurement Solutions for AR/VR Displays

UPRtek Spectral Measurement Solutions

Handheld Spectrometers

Handheld/Portable Spectroradiometers

Handheld PAR Meters

UV100n front view

Spectral UV Meter

 

 

 

The Importance of Mobility, Practicality

From this …

It’s not feasible to setup laboratory instrumentation at remote locations to measure and validate light quality (e.g.  offices, showrooms, production lines, exhibition or stores).

So mobile or portable light measuring devices have become an indispensible tool for companies and organizations manufacturing, buying, selling and researching LEDs.

To this …

Leveling the playing field: Confidence, Integrity, Trust

High precision spectral measurement instrumentation is often confined to laboratories and research centers. UPRtek’s 10-year endeavor has been to transform this out-of-reach technology and make it cost-effective and available to all industries. This means manufacturers produce with confidence, sellers sell with integrity and buyers buy with trust.

▸Read on about Certificates and Awards.

Helping LED Manufacturers make better products

LEDs remain an inexact science because of the nature of the LED semiconductor materials.  In effect, it’s difficult to maintain light quality consistently across all products, batch after batch.

We focus on helping manufacturers tighten up this LED-room-for-error by providing efficient, practical solutions in light spectrum measurement, testing and calibration efforts.

This means selling your products with more confidence, more precision, and consistent light quality for your buyers.

Helping buyers make better decisions with Spectral Measurement

Buying LEDs can be a subjective, tedious, sometimes perilous task … lots of manufacturers, distributors, spec sheet data. By using our spectrometers, you alleviate uncertainties using real data and convenient tools that help you assess and make confident decisions, by the numbers.

Comparison tools to juxtapose products, side-by-side, both numerically and graphically. And then save to storage for later review.

Measure

Flicker by the numbers

Analyze

Visual Flicker

Assess

Flicker Assessment

Tools to help you collect data, diagnose and make better decisions, by the numbers.

Making your life easier with Connectivity

Easily, our most widely downloaded item is our software (uSpectrum), which gives you the ability to connect to your surrounding digital world, allowing you take advantage of all your media and software capabilities.

▸Read on about uSpectrum PC software.

Connect

PC, Cell Phone (USB or wireless)

Transport

SD Card or USB Cable

Import

Data Compatibility, Data Analytics

What Our Customers Say

Cinema Fixture Manufacturer_Yellow
5 stars

“The MK350S has been solid for our end-of-line spectral measurements, but the real differentiator was the SDK. Being able to script measurements and pull raw SPD directly let us integrate the meter into our automated EOL and calibration systems instead of treating it as a standalone handheld. The UPRtek team was responsive and genuinely helpful in getting us set up.”

— Igor, Engineering Team, Professional LED Cinema Fixture Manufacturer

“The MK350S Premium has become an essential tool in my daily lighting evaluation work. I use it regularly for measuring indoor and outdoor lighting conditions and for documenting lighting quality issues for clients.

 

One of the most valuable features is the ability to access spectral data and use it directly in my reports and public posts, which helps me clearly communicate lighting differences to non-technical audiences.

 

I also use it when discussing lighting quality improvements with clients, helping them understand how different light sources behave in real environments.

 

The UPRtek support team from UPRtek has been responsive and helpful throughout my experience.”

— Jaroslav Petruška, Independent Lighting Educator and Consultant

Lighting Educator and Consultant
5 stars
Plant Breeding
5 stars

“Our work doesn’t require continuous light monitoring—we typically perform spot measurements several times a year or whenever lighting conditions need to be investigated.

 

The MK350D has proven to be an excellent fit for this workflow, especially when paired with the mobile app. Its wireless operation allows us to measure light without introducing human reflections or other interference, making the process both convenient and reliable.

 

The cable-free design is another major advantage, and even the black display helps minimize any potential impact on the measurement itself. These thoughtful design details make the MK350D a practical tool for our day-to-day work.”

— Kim Ros, Technician, A Plant Breeding Company

“When integrating the UPRtek SDK into our production line, we encountered some technical challenges. The UPRtek engineering team responded quickly, arranged a support call, and provided practical guidance that resolved our issues efficiently.

 

Their engineers were knowledgeable, patient, and genuinely committed to helping us succeed. We truly appreciated the excellent technical support throughout the integration process.”

— Ted Liu, Engineer, LED Packaging & Lighting Manufacturer

Lighting Manufacturer
5 stars

Where we can help.

LEDs are everywhere now, so UPRtek handheld spectral measurement devices have become a valuable tool in a wide ranging scope of industry, academics and commerce.

LED Manufacturing

Spot check QC, boost color quality, remote customer demos.

▸LED Manufacturing Industry

LED Commerce

LED validation at any remote location – offices, exhibitions, showrooms, stores.

▸LED Commerce 

Lighting Design

Light ambience design for libraries, museums, stadiums, homes, stage performance etc.

▸Lighting Design

Academics & Research

From office, to classroom, to lab.  Portable & convenient teaching and research tool.

▸Academics & Research

Light Safety and Health

Grow lights, marine biology, traffic lights, flicker, blue light hazard, UV hazard.

▸Light and Visual Safety

See Applications on top menu bar for more!

Make a Difference

Leveling the Playing Field for the LED Industry

LEDs are changing the world, but not all LEDs are created equal.  So how do manufacturers sell with integrity and how do companies buy with confidence? With practical, convenient, accurate specialized spectral measurement devices.

Latest Articles

Film & Cinema Lighting Case Study: Using MK350S Premium to Verify Spectral Accuracy in Professional LED Film Light Production

This case study examines how a leading manufacturer of professional LED film lighting — producing a series of professional LED cinema fixtures — integrated the UPRtek MK350S Premium Handheld Spectrometer into their end-of-line (EOL) photometric testing and calibration workflow.

LED Lighting Design Case Study: Using MK350S Premium to Meet WELL Certification Standards for Healthier Indoor Spaces

This case study walks through how professional lighting designers can integrate WELL certification criteria into their LED lighting workflow — and how the
UPRtek MK350S Premium Handheld Spectrometer provides the on-site measurement capability needed to verify compliance at every step.

UV Lights for Plants: Types, Benefits, How They Work, and More

Learn all about indoor UV lights for plants, including types, features, how they work, and best practices to support healthy growth and ensure safe use.

Photolithography Process: Steps, Uses & Semiconductor Guide

See how photolithography shapes semiconductor chips, from light exposure and pattern transfer to key advantages, applications, and future manufacturing trends.

What is Waveguide Display: How It Works, Types, and More

Learn how waveguide displays work, their benefits, common types, features, challenges, and why they are essential for AR smart glasses and wearable displays.

Near-Eye Display Explained: Technology, Parts, Uses & Optics

Understand the fundamentals of a near eye display system, including core components, measurement challenges, user comfort, and real-world applications.