Safety Precautions in use of Cryogenic Liquids Cryogens are liquids with boiling points below 200 degrees Kelvin (-73 degrees Centigrade).
(Safety Precautions in use of Cryogenic Liquids Cryogens; are; liquids with boiling points below 200 degrees)
Safety Precautions in use of Cryogenic Liquids Cryogens
are
liquids with boiling points below 200 degrees