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What is a “Spectral” PAR Meter? (vs traditional PAR meter/sensor)
Spectral PAR Meters are making inroads into the Indoor Horticulture market, sharing space with Quantum PAR Meters & Sensors – and growers want to know why. In this article, we compare these devices and detail the distinct advantages of Spectral devices for indoor farming.

How to remote control your MK350D from a smart phone or tablet?
In this article, we show you how to remote control your MK350D spectrometer using a smart phone or a tablet using Bluetooth wireless.

What is TM-30-15 (TM-30-18), Should I use it? How it Work?
TM-30-15 is a color rendering index system published by IES (Illuminating Engineering Society). A color rendering index system indicates how well a light, when shining on objects, can reproduce the object’s color accurately (compared to a black body radiator – e.g., the sun). TM-30-15 is next in a line of predecessor CRI systems (CIE CRI, GAI, CQS), each intended to improve on previous designs. In this article, we explain TM-30-15, its advantages, and why it’s important.

Automated LED Calibration for Cinema-Stage Light Manufacturing
Cinema LED light manufacturers use what are called “ratio tables” to calibrate their LED lights. This mostly manual process is time consuming, tedious and prone to errors. In this article we will introduce automated LED calibration as a way to speed up calibration many times over and ensure precision color accuracy according to CIE 1931 standards.

What Is The Difference Between a Spectrometer and Colorimeter?
What is the difference between a Colorimeter and Spectrometer? Both devices capture light in order to analyze it’s properties for any number of applications. However, there are some major differences that set them apart. In this article, we will explain the differences by contrasting structural design, functionality, applications, accuracy, advantages and disadvantages.

What is CRI (Color Rendering Index)?
What is CRI (Color Rendering Index)? It is a metric used to measure the ability of a light to bring out colors in objects (i.e. Color Rendering). Lights with a high CRI rating can make store products look brilliant and vibrant. Other lights with low CRI ratings will make the same products drab and lifeless.

What is TLCI, SSI and TLMF?
What You Need to Know About Cinema Lighting Metrics: TLCI, SSI, and TLMF? They are three metrics used in cinematography to measure a light’s ability to bring out colors (color rendering).

What is Phytochrome Photostationary State (PSS)?
For many plants, sprouting, flowering, fruiting are determined by seasonal variations. Here we look at PSS and Grow Lights and how they achieve the same influence. What is PSS (Phytochrome Photostationary State)?
Handbook Series

The Flicker Handbook
Everything thing you need to know about Flicker, an insidious, potentially serious lighting artifact impacting visual safety for public places like hospitals, offices, libraries, and more...
About UPRtek

United Power Research and Technology
UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.
UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.

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