BIOLOGY


A quantitative approach to photosynthesis experiments


With the Photosynthesis Tank, students can measure the dissolved oxygen content in the environment of an aquatic plant, thereby directly measuring its photo- synthetic activity. Water in the outer tank is used to control fluctuations. And the Optical Dissolved Oxygen Sensor measures the concentration directly and provides quantitative results without the need for inferred measurements or messy chemical indicators.


No more “what you should have seen is...”


Turning the light on and off creates an easily analyzed graph in real-time, showing the relationship between light and the rate of oxygen production. Students can further their understanding of photosynthetic rates by adding dyes as colored filters.


Complete your set of equipment for this activity with the Magnetic Stirrer.


Optical Dissolved Oxygen Sensor PS-2196


Also available: Optical Dissolved Oxygen Sensor Metal Guard


The metal guard protects the probe tip from damage and weighs down the probe for making measurements at depth. It is made of stainless steel and resists corrosion.


PS-2588


Optical Dissolved Oxygen Sensor Cap


This replacement sensor cap for optical dissolved oxygen sensor has a 12-month warranty.


PS-2587 Aquatic Productivity Bottles


ME-6937 Includes plastic bottles w/lids (5) and case with slotted lid.


Using the dissolved oxygen measurements, student can calculate the net and gross primary productivity of the algae suspension in relation to the amount of light.


Photosynthesis Tank PS-2521B


Includes Photosynthesis Tank, large #14 stopper with sensor ports, and 2 small #3 stoppers.


Magnetic Stirrer SE-7700


Includes stir bar, removable rod and power adapter.


The Stir Station is a “must-have” piece of lab equipment. The white top makes it easier to distinguish solution color changes.


To measure dissolved oxygen, the following sensor is required: Optical Dissolved Oxygen Sensor PS-2196


22 877.373.0300 (inside US)


Also available: Micro Stir Bar (5 pack) PS-2565


916.462.8383 (outside US)


The Photosynthesis Tank has two concentric Plexiglas® chambers. This unique design allows students to control the environment without interfering with the measurements.


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