Oil Bubblers
Oil bubblers are filled with mineral or silicone oil. These are both quite resistant to chemical attack. Oil bubblers are predominantly used; the oil is inexpensive and not toxic.
A drawback is that due to oil's lower density, in event of underpressure in the reaction vessel, enough oil may be sucked through the sump into the inert gas system to contaminate it. Due to the same reason, the pressure within the inert gas system will always remain close to atmospheric. This is a disadvantage when attempting cannula transfers using inert gas pressure to force a liquid reagent into another using a cannula.
Read more about this topic: Gas Bubbler
Famous quotes containing the word oil:
“Mr. Chadband is a large yellow man, with a fat smile, and a general appearance of having a good deal of train oil in his system.”
—Charles Dickens (1812–1870)