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Scheduled Maintenance:
Our website will be unavailable starting Friday, April 10 at 5:00 PM CST and will be back online Monday, April 13 at 6:00 AM CST.
We appreciate your patience.
Free Shipping on orders over $199
With the Fantastic Four-Color Oscillator: A Redox Demonstration—ChemTopic™ Lab Activity, you won’t believe your eyes as the solution flashes from green to blue to purple to red. And this four-color cycle repeats itself for well over an hour! Available as part of the Oxidation and Reduction—ChemTopic™ Labs digital collection. Click the Price link for digital collection pricing.
