The device shall be exposed to direct flamecontact for 12 seconds using the instrument specified.
应使用规定的仪器将装置与火焰正面接触12秒。
2
To show you what it looks like up close, I covered my hand in the gel and then painted on some thinned-down contact cement, which produces a very nice opaque yellow flame when lit.
It can freeze whatever it contacts (including your eyes), it is heavier than air and can suffocate you, and it produces a poisonous gas when it comes in contact with an open flame.