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Message: <blockquote data-quote="faulkton" data-source="post: 2808954" data-attributes="member: 561910">the max mixture in a dentist office is 70% nitrous, 30% oxygen. That is the strongest mixture that the regulators will allow, but that isn't what most dentists will give you. Nonetheless, if your friends dad is a dentist and you go into his office in the middle of the night, you can set it that high.100% nitrous is still a lot more fun, and for short periods is safe. It gets dangerous when used alone for extended periods of time.</blockquote>

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