eli5: Why do cheap lighters have a divide in their fuel reserve?

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I recently got a science teaching job and had to buy a cheap see-through lighter to ignite the Bunsens, I don’t understand why the tank has to have two different compartments on the inside. You can tilt it and fill up one or the other, could someone explain why this is necessary instead of one big tank?

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18 Answers

Anonymous 0 Comments

There’s also a wick inside of them to pick up the gas. This gets wicked up as a liquid and only turns to gas at the end. Having that divider means that double of the amount of wick would be in the fluid compared to without.

edit- pics of the wick, for those who had a different childhood.

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