BulbCollector Forums

BULB DISCUSSION BOARDS => Christmas Lighting => Topic started by: Roberta on October 30, 2003, 05:36:00 pm

Title: Oil or Water
Post by: Roberta on October 30, 2003, 05:36:00 pm

Can anyone tell me how you can tell what liquid is in the Vintage Bubble lights.Oil or Water?

  THANKS

Title: Oil or Water
Post by: Alan Franzman on October 30, 2003, 11:45:00 pm

I'm no expert, but here's what I believe:

None of them use water!

Some older ones used oil, but most use a liquid called methylene chloride.  I've seen some new "lava" bubble lights in Wal-Mart that seem to use a combination of oil and methylene chloride.

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Alan "A.J." Franzman

Email: a.j.franzman at verizon dot net

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[This message has been edited by Alan Franzman (edited November 02, 2003).]

Title: Oil or Water
Post by: James on November 08, 2003, 08:45:00 pm

Methyl chloride is what I would have suggested as well!  But it rarely works on its own.  Put a bit of sand in there, or crushed glass bits.  Without some kind of sharp-angled object in there you will probably have a tough time getting it to boil reliably.

Best regards,

James.

Title: Oil or Water
Post by: Alan Franzman on November 09, 2003, 06:30:00 am

James,

AFAIK all the bubble lights that I have, have some ground glass or similar material glued in the bottom of the liquid vial.  In a few of them, there are some loose bits of grit that can get stirred up by the bubbling.  In one, the entire disc of grit and glue has come loose and sometimes bubbles form under it and push it up.

In high school chemistry bits of ceramic "boiling chips" were used for similar purpose, to make the boiling start smoothly with small bubbles and not all at once with a big burst that might splash out the contents of a test tube.