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Who We Are
Contact Us
Who We Are

Since 1972 we have specialized in providing sensitive, reliable and easy-to-use fluorometers for environmental and industrial uses. We believe we supply more of these kinds of instruments than any other company in the world. 

Our job is to make your job easy and risk-free. To this end, we try to understand your application and help you determine the ideal instrument configuration. Additionally, our scientists and engineers are available to help you after you receive your instrument. 


We specialize in the measurement of fluorescent tracers, algal pigments, and other naturally occurring fluorescent compounds. We provide in-depth instrument support and we offer devices designed to enhance simplicity and improve quality. 


We take great pride in our work. If we exceed your expectations, please let us know. More importantly, let us know if we disappoint you so we can make things right and do better for our next customer. 


Jim Crawford

Toll Free: 1-877-316-8049

Phone: 1-408-749-0994

1995 N 1st Street
San Jose, CA 95112-4220

Proud Sponsors of Marine Science Institute

As a part of Turner Designs mission to support ecological sustainability and local non-profit organizations, we are proud to announce our sponsorship of the Marine Science Institute in Redwood City, California. 

The Institute's mission is to cultivate a responsibility for the natural environment and our human communities through interdisciplinary science education. We achieve this goal through innovative marine science education programs that:


  • Place students of all ages in direct contact with the natural environment

  • Emphasize the interdependence of all living things, their connection to the physical environment, and the special responsibilities of humans to the environment

  • Facilitate active learning through the use of observation, critical thinking, and problem-solving skills in a cooperative setting

  • Instill confidence, encourage involvement, and inspire accomplishment by providing positive role model

For more information, please visit the Marine Science Institute's website.

We Proudly Sponsor
Top 5 Reasons to Buy from Turner Designs
  1. 95% of our customers are satisfied or very satisfied with the reliability of our products.

  2. We provide free technical support for our products for the life of the instrument.

  3. Over 97% of our customers are satisfied or very satisfied with the support they received.

  4. When asked to rate how likely they would be to recommend us to others on a scale of 1 to 10, our average is consistently over 9.

  5. We have been designing and manufacturing fluorometers for more than 45 years and have shipped over 75,000 units.

Alan Wilson

Auburn University

"I have been using your products for >20 years and strongly encourage others to do so. Keep up the good work."

Harry Looney

Lake Anna Civic Association

"This device does exactly what we need it to do. I manage water quality monitoring projects on a large lake in Virginia. We have had harmful algae blooms the past few recreation seasons and our organization was looking for a device that could give us real-time readings on chlorophyll and phycocyanin. CyanoFluor does just that. We are very pleased with our purchase and the support that the Turner Designs team provided in our purchasing process."

James Killarney

Unity College

“Very easy to contact company with questions before and after ordering. Calibration docs were a little difficult to follow at first but a quick call solved the problem I was having.”  

Keeley MacNeill

Cornell University

"I love everything about the Turner Designs handheld fluorometers I've used and recommend them to anyone with relevant needs."

Erin Satterthwaite

Bodega Marine Lab

"I appreciate how helpful all of the people I interacted with from Turner Designs were. I definitely feel it is an A+ company, and those are hard to find.  Thanks!" 

Jonathon B. Van Gray

Kent State University

"I have used many Turner Designs products and they have never let me down!" 

Dr. Janet Rowe

University of California, Irvine

"I would rate you higher than 10 if 11 was an option. I'm happy to see that you guys are continuing to improve your products and services. It was a pleasure to interact with Tom Brumett, and that really means something because I typically loathe dealing with sales reps.  You have a well-earned, great reputation. Please keep it up." 

Jim Watkins

Cornell University

"Tom Brumett in sales has been particularly helpful. Also very quick delivery of solid and certified standards the day before a cruise was appreciated." 

Daniel Grassick

City of Cannon Beach

​"The handheld fluorometer has been a great addition to our lab and testing protocols for stormwater quality monitoring. We have been able to prove the contaminants are not from a residential source - this has significantly improved our public relations with the local watershed council membership - a very worthwhile investment for that reason alone! Tech support has been great and staff came up to speed on use of the unit within a week. Very easy to use and consistent results. Thank you for the assistance and support."

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Why Buy from Us
Customer Testimonials

Jamey Anderson

Michigan Technological University

Turner is consistently one of the best experiences I have with any company in their field. Sales, service, packaging, documentation, engineering, build quality, etc. They are among the best.

Rebecca Gilpin

Mississippi State University

I really enjoyed working with this company. Great communication and easy ordering process.

Kim Sitta

South Carolina Department of Natural Resources

Completely satisfied with the customer service I received from Turner. The sales/support team always answers all of my questions, responds promptly, and happily tries to help me with any issues.

Terry Dock

Colorado River Indian Tribes Environmental Protection Office

"The tech support is better than excellent. Kathleen answered my call when I was in the field. Lawrence's assistance has helped me develop and implement a NAB monitoring protocol. It would not have happened without him. The correction factors and standards helped to create a reliable set of data. thanks!"  

Nikki Cantatore

Harbor Watch, a program of Earthplace

"Lawrence has been a great help with all my little questions I keep having. He never seems bothered by me and is always willing to give me as much time as I need to understand my next steps!"

Brent Utech


"We have this instrument in multiple QC labs and they have all worked great over the years. We actually started with the TD-700 model and have updated our methods since to use the 7200."

Kevin Spigel

Unity College

"Tom was very helpful when ordering our DataBank and 2 Cyclops sensors. The field of fluorometers was new to me, so I had a lot of questions. The instrument worked very well for our undergraduate research project and gave the students experience working with instrumentation they are likely to use later in their careers. The website was very helpful, I just had a difficult time finding what I needed because fluorometers are new to me. The technical documentation clarity is in response to the calibration of the instrument. Better when I called to discuss with Tom."

Patrick Morse

Waterborn Environmental Inc.

"Sales Engineer was very helpful and responsive. The white papers and other reviews on dye tracing, put together by Turner, are extremely helpful in catching people up to speed on the basic methodologies used and the limitations of the equipment. I recommend putting together a more comprehensive review on Fluorescein at some point. "

Yajuan Lin

Duke University

"Instrument is reliable. Sales support team very helpful." 

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