Henri Moissan's Fluorine

Origin
Henri Moissan was instrumental in studying the behavior of fluorine, as nobody before had been able to reliably make it. By giving a mixture of potassium hydrogen difluoride and hydrogen fluoride a jolt from electrolysis, he successfully separated fluorine in a pure form.

Eventually.

Many of his earlier experiments were absolute duds that ruined his equipment, as he couldn’t judge the right compounds needed. Moissan was lucky, as he received the Nobel Prize and 10,000 francs for his breakthrough. Similar minds who tried before only ended up horribly injured from fluorine’s corrosive strength.

Effects
Encased in a platinum container to nullify any reaction with air, this supply of fluorine can enhance any chemical property. Molecular bond strength, substance flammability, electronegativity and even radioactive decay can all increase when applied to another sample.

Contacting any measurement instruments will cause the fluorine to vigorously bubble and dissolve away the material until it falls apart into pieces.