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What does far red light do for plants?
Far-red light impacts plants in so many ways that it’s sometimes confusing, misunderstood, and even controversial. Nevertheless, it’s an important topic for indoor growers to grasp in order to harness the strategies of far-red light in their businesses.

Optimizing Indoor Agriculture: Leveraging the Power of UVA Spectrum
Indoor agriculture faces a challenge in delivering visually appealing, nutritious crops without natural sunlight. To overcome this, leveraging UVA spectrum light offers a promising solution. Research shows that controlled UVA exposure enhances fruit ripening, improving sweetness and flavor. Integrating UVA optimization into indoor farming practices can elevate crop quality, meeting consumer preferences effectively.

Hue, Saturation, Brightness and Spectrometers
When we talk about light and color, terms like Hue, Saturation, and Brightness frequently come up, but many of us struggle to explain them or grasp their significance. In this article, we aim to demystify these terms, explain why they matter, and show you how to measure them.

What is a Spectrometer, Spectrophotometer, Spectroradiometer?
3 Spectral Devices standout; Spectrometer, Spectrophotometer and Spectroradiometer. However these terms are often used interchangebly and results in misunderstandings. In this article we discuss the differences.

What Color Grow Light is Best? Why Grow Lights Are Purple?
Grow lights shine purple because they are arrays of bluish and reddish LEDs. And plants are most efficient at absorbing blue light and red light to conduct photosynthesis, that results in sugars used for many of the plants metabolic processes.

What is Light and where does it come from?
We non-scientists take for granted that light is just light, and hardly think about where it comes from or how it’s produced. So if your work involves light, lighting or even indoor farming, we thought you might like to know.

What is Metamerism?
Metamerism is when two materials show the same color under one light but display different colors under another.

Mystery Chicken: Revealing the Color Rendering Index!
Picture this: you’re at the grocery store, eyeing the chicken fillets on the shelf. The meat looks fresh and pink, but when you place it in your cart, something strange happens—the color transforms into a more yellowish, bland hue. Intrigued, I decided to investigate.

Understanding what is a PAR Meter and why it’s an essential tool.
PAR meters are used to measure light from the Sun or Grow Lights to ensure agricultural plants are receiving enough light for health development and growth.

Light Meter Distance to Light Source
Our users ask if the distance between your meter and the light source should be considered when measuring your light. It depends on what you are measuring.
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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