1. Pick up one of the solvent bottles. 2. Place it on the appropriate shelf by solvent category. If you need a reminder of different solvent types, check out the Solvent Type Theory Page in the Theory tab. 3. Correctly categorized solvents will be indicated by a positive feedback sound! Incorrect placement will be indicated by a negative feedback sound. Please pick up the bottle again and replace it on a different shelf until you find the correct category. 4. Repeat for all solvent bottles!
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