I'm telling you how the effects are created, not advising you to make your own smoke. If you are a serious do-it-yourself type, read the article and then please follow the links I have provided to the right of this article, which include specific instructions and warnings from professionals and experienced amateurs.
Aside from using a smoke machine, this method is the simplest for most people, both in practice and obtaining materials. Dry ice is solid carbon dioxide.
You can make a dense fog by adding dry ice to hot water or steam. The carbon dioxide is vaporized, making a fog , and the rapid cooling of the surrounding air condenses water vapor in the air, adding to the effect. Important Points. One of the big advantages of liquid nitrogen is that nothing extra is needed to produce fog. Liquid nitrogen works by evaporating and by cooling the air, causing water to condense. Nitrogen is the primary component of air and is non-toxic.
Most smoke machines use water with a glycol mixture to produce special effects. The glycols are heated and forced into the atmosphere under pressure to create a fog or haze.
There are a variety of mixtures that may be used. See the reference bar to the right of this article for Material Safety Data Sheets on some example types. Some homemade recipes for fog juice are:.
The resulting smoke should not smell "burnt. The lower the percentage of organic, the less expensive the fog juice, but the fog will be lighter and will not last as long. Distilled water is only necessary if a heat exchanger or other tubing is used in the system. This type of fog is heated and will rise or disperse at a higher level than dry ice or liquid nitrogen fog. Coolers can be used if low-lying fog is desired.
The fine fog can reach into corners and difficult areas and may also penetrate porous surfaces. Fogging machines have become an essential piece of equipment for effectively sanitising large internal spaces, common touch surfaces and hard-to reach areas following the COVID outbreak. They are versatile for use in a wide range of environments including offices, waiting rooms, classrooms, gyms, holiday homes and shopping centres.
They are particularly popular with public transport providers and vehicle hire companies to disinfect vehicles when returning to base or after each hire use. We strongly advise that you use an antiviral disinfectant and sanitiser that has been tested against viruses and other harmful bacteria.
ULV stands for ultra-low volume because of the low volume of fluid that is required to create enough fog to cover very large areas. Instead the machine uses large volumes of air at low pressure to convert a liquid into droplets that can then be dispersed into the atmosphere. The advantage that ULV foggers have over thermal foggers is that they allow you to control the particle size. Most cold or ULV ultra low volume foggers can disperse dry and wet fog. Their nozzles allow you to regulate both the spray volume and droplet size.
Dry fog usually has droplets that are 10 to 15 microns in diameter. This is because the droplets are so small that they create a seemingly dry fog.
On the other hand, a fog that has droplets that are 20 microns or larger in diameter is considered wet fog. This fog appears to be wetter and more like a mist than a fog.
Dry fog is more suitable for smaller spaces, whereas wet fog offers greater practicality for covering larger areas due to the increased size of the droplets. In office, business or food production settings, you may choose a chemical disinfectant like our BAC 5 Antibacterial and Antiviral Surface Disinfectant. Cooking oil has a tendency to get gummy and smell bad, however.
Fog machines use glycerin or glycol mixed with water. According to a Seattle Times article, "The fog is created using propylene glycol and triethylene glycol, mixed with 20 percent water. It seems like it is a problem for asthmatics, but nothing has been proven conclusively for the general population. If you would rather be safe than sorry, you can use dry ice which is available at most ice manufacturing plants and is fairly inexpensive -- look up "ice" in the phone book, and never handle the stuff with bare hands!
When you place dry ice in hot water, it creates a dense fog that clings to the floor. This fog contains carbon dioxide and water vapor , so it is completely harmless. Sign up for our Newsletter!
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