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 _    _    __   __   _    _    _    _    _    _   
| \  / ||  \ \\/ // | || | || | || | || | |  | || 
|  \/  ||   \ ` //  | || | || | || | || | |/\| || 
| .  . ||    | ||   | \\_/ || | \\_/ || |  /\  || 
|_|\/|_||    |_||    \____//   \____//  |_// \_|| 
`-`  `-`     `-`'     `---`     `---`   `-`   `-`

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Text this: Soap bubbles in analytical chemistry. Conductometric determination of sub-parts per million levels of sulfur dioxide with a soap bubble