Percival Scientific News Releases

For Immediate Release:

Joni Campidilli, Percival Contact: 515.465.9363

Percival Scientific Introduces an Affordable LED Lighting System for the Research Industry

Product Webinar explains the benefits of this new LED Lighting Option in Research Chambers

PERRY, IA, February 15, 2013— Seeing a need to bridge the gap between costly color-specific LED lighting and lower-cost conventional fluorescent lighting, Percival Scientific, a global manufacturer of chambers and incubators for the research industry has introduced the LED-Elite Series. This new series of chambers features a multicolor LED lamp providing the correct spectral quality at the correct irradiance with exceptional environmental control every time.

LED, or Light Emitting Diode, is a solid-state, semiconductor that emits light when voltage is applied to it though a process called electroluminescence. These solid-state lights (SSLs) are rapidly growing, both in application in various industries and products, in efficiency and in popularity among consumers.

Designed Around the Pros and Cons of LED Lighting
LED lighting systems, while growing in popularity, possess both benefits and challenges. Percival, with over 20 years of designing, testing and installing LED lighting in chambers, began the process a year ago to design a new lamp bank with these benefits and challenges in mind.

The popularity of LED for research applications stems from the following:

  • A longer life and no harmful toxins mean LED is environmentally friendly
  • Ability to control the output and wavelength
  • Highly stable and predictable which allows for the reproduction of the same experiment over many experiences
  • A robust light source due to the solid-state architecture; this reduces burnout and other mechanically induced failures
  • Maximum light output varies by chamber model. Beginning at 24° C, unlike fluorescent lighting, LED output increases 10% measured at 6” from the lamp bank as the temperature decreases to 0° C. In contrast newer fluorescent lighting (without using Percival’s patented lamp bank design) experiences a decrease in light intensity of up to 60% for the same temperature drop.

The challenges to LED lighting in research chamber applications include

  • High ambient temperatures and humidity reduces output and efficiency
  • High initial cost
  • Color rendering is limited; doesn’t allow for every color in the spectrum of sunlight
  • Sensitive to voltage and polarity
  • Hard to achieve color distribution when multiple colors are used

The challenge for researchers, especially those in the plant-growth research industry, has been finding a happy medium between unstable, high heat, hard-to-control fluorescent lighting and the high cost and color limits of LED lighting.

New Design Approach
Building upon a long history of experience and knowledge in LED lighting for a variety of research applications, Percival is taking a different approach to LED lamp design. The new design includes:

  • Improved lighting system performance over a larger range of temperatures
  • Greater flexibility to control specific wavelength of light
  • LED modules contain White/Red and White/Far Red color combinations
  • White LED’s are included on every module and offer a high-output Cool White color that is ideal for high light intensity, color rendering and visual plant inspection.

This type of lighting system is currently available only through Percival Scientific. While standard with the Elite Series in 30, 36 and 41 sizes, this exclusive lamp bank is also available as an optional upgrade to any other Percival chamber.

For More Information
Percival produced a webinar to help industry professionals understand the features and benefits of LED lighting in research chamber applications. This webinar is available now at http://www.percival-scientific.com/about-us/led-lighting-webinar. In addition, complete product specifications are available at www.percival-scientific.com or at info@percival-scientific.com

About Percival Scientific, Inc
Percival Scientific, Inc. is based in Perry, Iowa. Established in 1886, the company received its first patent in 1901 for a refrigerated cabinet design. In the 1950’s, Percival became involved in creating the first commercially available plant growth chamber. Today, Percival leads the industry in the design and manufacturing of plant growth chambers, biological incubators and special application chambers.  Percival ships chambers to universities, government institutions and business both domestically and internationally. For further information on Percival Scientific, Inc, please visit www.percival-scientific.com.

Percival Scientific’s New Web Site Showcases Extensive Product Line

Product Benefits and Specifications at Your Fingertips

January 27, 2012 (Perry, IA) - Easy to navigate and designed to showcase a larger product line reaching a broader array of research disciplines, Percival Scientific, Inc. today announced the launch of its new website, percival-scientific.com. The redesigned site reflects the company's mission to provide reliable, custom research chambers while simplifying the decision-making process. The home page lets the user immediately target their chamber of interest. From there, users will find a photo, product overview, features and benefits, lighting options, control systems and model types for each Percival Scientific growth chamber - without leaving the product page.

"This site has a fresh, clean look and feel which I think appeals to a both a new audience as well as our long-time customers," said Percival's vice president of sales and marketing, Joni Campidilli. "Site visitors shouldn't have to hunt for information.  Percival's new site delivers information that is essential to the laboratory manger, purchasing manager or research scientist."

The site also includes a full product catalog in PDF format, information on parts and service, and technical information on Percival's unique control systems Intellus and Weathereze. "This new site also allows us to showcase the many partnerships we have with research labs all over the world," adds Campidilli.

About Percival Scientific, Inc.
Percival Scientific, Inc. is based in Perry, Iowa. Established in 1886, the company received its first patent in 1901 for a refrigerated cabinet design In the 1950's, Percival became involved in creating the first commercially available plant growth chamber.  Today, Percival leads the industry in the design and manufacturing of plant growth chambers, biological incubators and special application chambers.  Percival ships chambers to universities, government institutions and business both domestically and internationally. For further information on Percival Scientific, Inc, please visit www.percival-scientific.com.

Percival Scientific, Inc. Awards Second Annual Student Scholarship

Scholarship Encourages Careers in Biological Sciences

April 11, 2011(Perry, IA)— Janet Arras was the recipient of the Percival Scientific Undergraduate Entomology Student Activity Award at the annual meeting of the Southwestern Branch of the Entomological Society of America held in Amarillo, TX, during March 6-10 2011.  Ms. Arras is a Junior Biology major at the University of Texas at Tyler located at Tyler, Texas. A native of Chihuahua, Chihuahua, Mexico, Ms. Arras grew up in El Paso, Texas.

This is the second year Percival Scientific, an industry leader in providing quality research chambers, has sponsored the $250 cash award to support and encourage undergraduate students pursuing careers in entomology and related biological sciences.  This cash award, and a certificate, will be presented annually for 5 years beginning in 2010 to recognize an undergraduate student from the Southwestern Branch of the Entomological Society of America for outstanding contributions to the Society, his/her academic department, and the community, while still achieving academic excellence.

Ms. Arras plans to attend medical school following graduation from the University of Texas at Tyler in the spring 2012. She is involved in the Biology Honor Society, Premed/Predent Club, and is the secretary of the Patriot Orchestra Club. 

About Percival Scientific, Inc.
Percival Scientific, Inc is based in Perry, Iowa.  Established in 1886, the company received its first patent in 1901 for a refrigerated cabinet design.  In the 1950’s, Percival became involved in creating the first commercially available plant growth chamber.  Today, Percival leads the industry in the design and manufacturing of plant growth chambers, biological incubators and special application chambers.  Percival ships chambers to universities, government institutions and business both domestically and internationally. For further information on Percival Scientific, Inc, please visit www.percival-scientific.com.

Percival Scientific, Inc. Issued Light Fixture Patent

Covers Temperature Controlled Light Fixture for Environmental Chambers

September 14, 2010 (Perry, IA) Percival Scientific, Inc. announced the issuance to it by the US Patent Office of a patent that holds the potential to revolutionize the environmental growth chamber industry.

The patent (invention number 7,794,105) is for a light fixture that optimizes lamp efficiency and produces stable lamp output over a wider ambient temperature range than was previously possible with conventional lamp bank architecture.

A common application for Percival’s environmental chambers is plant growth research, where parameters such as temperature, light and humidity are tightly controlled.

Fluorescent lights are the light source of choice for plant growth researchers due to their availability and light output; however, some types of fluorescent bulbs are sensitive to the temperature of the ambient environment in which they are operating. A bulb operates at peak efficiency at an optimal ambient temperature. As the temperature moves away from this optimal point, the lamps in chambers become less efficient and start to dim.

To make up for the temperature loss, previous lamp bank designs included additional lamps. While this solution ensured that the minimum light intensity performance requirements were met, it did not address the lighting system’s varying output
throughout the temperature range.

“Before now, no one in the industry had developed a solution which optimizes lamp efficiency and therefore supplies stable lamp outputs over a wider range of temperatures,” said Henry Imberti, senior VP of engineering, Percival Scientific. “Our new light fixture will require less energy, place less stress on other chamber systems, increase the light output and utilize previously wasted by-products.”

Unique features of this patented system include:

  • Specifically tuned temperature controller to maximize light output for a variety of bulb-types per the manufacturers published Temperature vs. Intensity curves.
  • The ability to take previously unwanted heat within a chamber and produce a positive effect on lighting and energy consumption.
  • Increased performance of dimmable lighting to meet a greater demand within the scientific community.
  • Reduce size and energy consumption of the chamber refrigeration system.

A temperature controller with a sensor located inside the light compartment will act as switch for a series of air circulation fans. These fans will turn on and off to regulate the optimal temperature point for maximum lamp efficiency.

“A global mandate for environmentally conscious/responsible products combined with Percival Scientific’s expertise in lighting systems and world-class research equipment design ultimately culminated in this new technology,” said Daniel Kiekhaefer, engineer manager. “Not only will the plant growth industry benefit from this new technology, but so will other types of research based industries.”

About Percival Scientific, Inc.
Percival Scientific, Inc is based in Perry, Iowa. Established in 1886, the company received its first patent in 1901 for a refrigerated cabinet design. In the 1950’s, Percival became involved in creating the first commercially available plant growth chamber. Today, Percival leads the industry in the design and manufacturing of plant growth chambers, biological incubators and special application chambers. Percival ships chambers to universities, government institutions and business both domestically and internationally.

Percival Scientific is Proud to Support Undergraduate Entomology Student Award

April 29, 2010 (Perry, IA) Congratulations to Chris Timmons from the University of Texas at Tyler on receiving the Undergraduate Entomology Student Activity Award sponsored by Percival Scientific. Chris Timmons is an undergraduate student in Dr. Blake Bextine's lab at the University of Texas.

This award will be presented annually beginning in 2010 to recognize an undergraduate student from the Southwestern Branch of the Entomological Society of America for outstanding contributions to the Society, his/her academic department, and the community, while still achieving academic excellence.