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Hong Kong protesters r rendering the CS Gas grenades useless in liquid nitrogen
- rolph 7y ago-in liquid nitrogen canisters. vacuum flask; Dewar flask or ^Themos^ bottles all apparently similar items. https://en.wikipedia.org/wiki/Vacuum_flask https://en.wikipedia.org/wiki/Vacuum_flask The truncated title gave me the impression the burning CS canisters were being thrown into liq nitrogen ! im sure that would be spectacular. anyway, i think any old empty paint can might do it if the grenade extinguished before the gas pressure blows the lid off, but it doesnt hurt to be a little exessive when its critical to contain.