Editing Hydrogen sulfide
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* A small syringe or pipette to measure 1 mL volumes | * A small syringe or pipette to measure 1 mL volumes | ||
* Plastic wrap or watch glasses | * Plastic wrap or watch glasses | ||
* 1% [[Copper sulfate]] (CuSO<sub>4</sub>) solution (If you can't obtain copper sulfate, you can clean several | * 1% [[Copper sulfate]] (CuSO<sub>4</sub>) solution (If you can't obtain copper sulfate, you can clean several pennies in an acid solution like lemon juice or vinegar.<ref name="Kaiser"/>) | ||
* Optional: [[Ascorbic acid]] and distilled water to make a 5% ascorbic acid solution. Mix 2.5 g ascorbic acid into 50 mL water. | * Optional: [[Ascorbic acid]] and distilled water to make a 5% ascorbic acid solution. Mix 2.5 g ascorbic acid into 50 mL water. | ||