how the glass ampules containing liquid drugs are made without destroying the drug?
In: Engineering
You take a glass bulb that’s open at the top with a long thin glass neck, pour the liquid in, then heat part of that neck until it starts to melt then twist it so the melted part seals itself and the rest of the neck tube can be cut off.
Because glass has low thermal conductivity only that spot you heat on the neck actually gets very hot.
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