Aquatic Productivity Bottles • ME-6937

Great to show affect of photosynthesis on carbon dioxide and oxygen production!

Shown with PASPORT Optical Dissolved Oxygen Sensor

Net Primary Productivity (mg/L) vs. Light Intensity (%): Notice that for the bottle in the dark, the Net Productivity is negative.

U.S. Educator Price

$45

This rack filters 0%, 25%, 50%, 75% and 100% of incident light to simplify the study of primary productivity.

What's Included

5x Plastic bottles w/lids
1x Case with slotted lid

What to Consider

See the Buying Guide for this item's required, recommended, and additional accessories.

Product Summary

The Aquatic Productivity Bottles rest in a rack that provides consistent and reliable light control for quantitative aquatic productivity studies. The identical transparent bottles nest in each of five rack positions. The custom design of the rack shields the bottles from light by blocking a fixed percentage of light in 25% increments from 0 to 100%. Includes set of 5 transparent plastic bottles.

How It Works

Students fill the bottles with algae solution or pond water and then they measure the dissolved oxygen concentration in the solutions before and after incubation in fluorescent light. By comparing the dissolved oxygen concentrations in each solution, students learn about the relationship between light intensity, dissolved oxygen concentration, photosynthetic activity, and the primary productivity of aquatic ecosystems.