Opti-Sciences OS-500 Modulated Fluorometer
  • Opti_Sciences_OS_500_View1_2016112101736
  • Opti_Sciences_OS_500_View2_2016112101736
  • Opti_Sciences_OS_500_View3_2016112101736
  • Opti_Sciences_OS_500_View4_2016112101736

Opti-Sciences OS-500 Modulated Fluorometer

This Opti-Sciences OS-500 Modulated Fluorometer is used and in excellent condition. This unit does not include a battery or charging accessories.

Included Accessories:
• Trifurcated Fiber Optic Light Guide with Built-In Trigger Switch
• Nylon Field Bag

View Photo of Trifurcated fiber optic light guide with built-in trigger switch.

View Photo of Nylon field bag.

Have a quote from somewhere else? Click Here
Stock # 87284-1
Quick Quote
Sell Yours
Repair Quote
  • More Info
  • Tech Specs
  • Additional Photos
  • Datasheets / Manuals 
  • View It Live Request 
Contact Us
Opti-Sciences OS-500 Modulated Fluorometer

  • Modulated Detection System
  • Wide Range of Modulation Intensity and Gain Settings
  • On-Board Adjustable Actinic and Far Red Illumination Sources
  • Portable Battery Operation
  • Inputs for Leaf Temperature and PAR


The Opti-Sciences OS-500 Modulated Fluorometer is a versatile measuring instrument designed to precisely measure chlorophyll fluorescence. It uses a pulse modulated detection principle to allow for a variety of tests to be conducted under greatly varying environmental conditions. The system is simple to use, light weight, and battery powered, making it an excellent choice for field studies. The OS-500 is completely self-contained, eliminating the need for any external hardware or computing device. All detection and data-logging components are on-board. Detection is done in the 710 to 760 nm range using a PIN silicon photodiode with appropriate filtering to narrow the optical response. A low-noise preamplifier is mounted in the detector assembly. The detection method is a modified lock-in amplifier design which allows the use of a very average modulated light energy. This allows monitoring of the fluorescence level without exciting any noticeable variable fluorescence. The detection rate is switchable by the computer for maximum signal to noise ratios and for accurate sensing of rapidly changing signals.

Product Family: OS-500

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

Contact Us


Contact Us

Item Images

Click a thumbnail to view larger image:

Opti-Sciences OS-500 Modulated FluorometerOpti-Sciences OS-500 Modulated FluorometerOpti-Sciences OS-500 Modulated Fluorometer
Opti-Sciences OS-500 Modulated Fluorometer

Contact Us
Manuals, Datasheets, Drivers, Links

Opti-Sciences OS-500 Manual (pdf) 
Link to Opti-Sciences Website 

Contact Us

View It Live

View equipment LIVE - Before you buy!

InstraView™ Equipment Inspection

Buying used equipment doesn't always have to be a shot in the dark. We know there are plenty of differences when it comes to used equipment and quite often, choosing between different pieces is difficult, especially when the equipment is not sitting right in front of you.

Well, what if you were able to see a piece of equipment before you purchased it? Not just a picture from the manufacturer's website, but the actual piece of equipment you would receive.
With InstraView™, we move you one step closer to inspecting the equipment you're interested in without having to wait for the equipment to show up at your door.

InstraView™ works in your web browser and allows you to view the actual piece of equipment you're interested in before purchasing. You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment.

It's like having the store come to you!

InstraView Request Form

To get started:

  1.   Fill in the request form below
  2.   We'll send you an email letting you know exactly when your piece of equipment will be available for viewing

Item to Inspect: 87284-1 - Opti-Sciences OS-500 Modulated Fluorometer

All you need is a web browser (ie. Microsoft Internet Explorer or Netscape) and Sun's Java Runtime Environment installed. If you need to install the Sun Java Runtime, you may download the latest Java SE Runtime Environment (JRE) http://www.oracle.com/technetwork/java/javase/downloads/index.html