Wearing gloves, submerge the canister in a wide-mouthed water jug containing baking soda, dish soap, and/or vegetable oil—3 tablespoons of each per liter of water.
Cover the top with one hand, just enough to keep the gas from getting out, and shake the jug.
Wearing gloves, submerge the canister in a wide-mouthed water jug containing baking soda, dish soap, and/or vegetable oil—3 tablespoons of each per liter of water.
Cover the top with one hand, just enough to keep the gas from getting out, and shake the jug.