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| |  Posted 1/7/2008 5:50:05 AM | |
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| | Hi all, I'm thinking of making larger test tubes for the entryway into the sanctuary. I'm going to try making these out of plastic soda bottles(2 liter size), cut and taped together. I'm thinking of making each test tube capable of holding dry ice....would this NOT BE JUST SOO COOL!! My question....I know some of you have worked with dry ice. How much would I need in each test tube so that the effect would last for the 1/2 hour while parents are dropping of kids & kids are in singing for sonic sing & play? Do I just keep water in the top of the test tube and drop in a new piece of dry ice each day, or does the water need to be freshly warmed up each day. I'm new to dry ice!! Thanks for your reponse & blessings, Vanessa |
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| | | Posted 1/7/2008 7:58:53 AM | |
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| I did this for our Fall Outreach. I used a large plastic vase (similar in size to the soda bottle). The water must be warm for the full vapor effect to last. If it is too hot it will die down quicker. I would say a piece of ice about the size of a small brick (6x2x3) will give you up to 15 minutes of good vapor. The larger the piece the more time of course. Then you would have to change the water (warm again).
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| | | Posted 1/7/2008 6:57:15 PM | |
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| Do you cover the dry ice completely???
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| | | Posted 1/7/2008 11:38:20 PM | |
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| | Yes, you must submerge the entire piece into the warm water. You should have at least 4 inches of water above the ice. *NOTE - You must monitor the vase/container so that kids do not dip their hands into it and try to grab the ice! It is preferable if you use a cylinder with a small opening or put it in an area out of reach. Handling Dry Ice
Due to its extremely cold temperature (-78.5oC, or -109.3oF), dry ice can cause damage to the skin if handled. Use tongs or insulating gloves when handling dry ice. It is also important when crushing or grinding the solid not to get any of the dust into your eyes. Wear protective goggles.
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| | | Posted 1/8/2008 1:47:37 PM | |
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| Thanks, I don't guess it would hurt to add a little food coloring to it would it?? I thought about getting some of the large vases at walmart that look like test tubes and put several colors of food coloring in them with dry ice. We could use it one Sunday for a fund raiser table. 
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| | | Posted 1/8/2008 4:06:41 PM | |
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| I know nothing about dry ice! Where do you even get it? Approximately how much would a brick size cost? 
Carrie
from Ohio
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| | | Posted 1/8/2008 4:14:40 PM | |
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| | I assume it varies from store/state. I got a cube the size of a cinder block for $14. You can get lots of good pieces from that. You can buy less I am sure. Check out your local Ice supplier. When you buy it you have to plan to use most of it quickly (within a couple of days). You need to wrap it up very good (insulate if possible) and store in freezer. Here is one of close to me. It gives size specs and uses. http://www.articiceco.com/DryIce.htm
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| | | Posted 1/8/2008 11:33:15 PM | |
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| | | Posted 1/9/2008 6:51:49 AM | |
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| | Thanks Mike, It sure would be cool if the fog would be colored as well.
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| | | Posted 1/9/2008 6:58:51 AM | |
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| If you shine a colored light through the fog it would produce the effect 
He who works his land will have abundant food, but the one who chases fantasies will have his fill of poverty. Proverbs 28:19
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