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Gemischt • Re: Haltbarkeit Nebelfluid ADJ Fog juice - 5 Liter?

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Von der Firma Martin (Hersteller von Nebelmaschinen und Fluid):
Question:
How long can Martin smoke and haze fluid be stored for?

Answer:
For storage temperatures in the range of 10°C to 30°C (50°F to 86°F), fluids may be stored in un-opened sealed
containers for up to 5 years.
For fluid installed (un-sealed) in smoke machines, the life will be reduced to 2 years when operated in the 10°C to 30°C
(50°F to 86°F) temperature range.
Fluids can be stored and used at higher ambient temperatures, but with consequential loss of service life.
If fluid has been stored for long periods of time, partial separation of the ingredients can occur and you should shake
the fluid bottle thoroughly to mix the fluid before use.
Quelle

Von der Alliance of Special Effects zu Safety Issues for Glycol/Glycerol Water-Based Atmospheric Effects
The chemicals used in the fog fluids are not toxic. Despite some claims to the contrary,
they are not carcinogenic and they do not cause asthma. Indeed, they can be safely
ingested in fairly large quantities: drinking 30 milliliters of glycerol three times a day
for fifty days has been proven harmless to healthy individuals, and drinking 1 to 1.5
grams of propylene glycol per kilogram of body weight is a safe dose for medical uses
ˆı-1

(it is sometimes used to reduce interocular pressure) [2]. This is far more than is
ingested in normal use, and since most of us are not in the habit of drinking bottles
of fog fluid1, there is little danger of toxicity from ingestion.
There are similarly few problems with inhalation. The Actors’ Equity Association, which if anything has a conservative bias towards allowable limits, sets forth
a recommended level limiting an actor’s exposure to 40 milligrams per cubic meter.
[3]. This is a heavy level; Ruling notes that glycol levels on Broadway stages have
consistently been measured at less than 10 mg/m 3 [2]. The Equity report provides a
summary of how long it takes for the glycol levels from various fog machines to drop
below the recommended level; at three feet from the largest fog machines, the time
is less than 230 seconds, and considerably less at greater distances [3]. It does not
provide an analogous guideline for glycerol levels, but a similar limit would still allow
for extensive use of smoke — indeed, the confusion from the dense cloud of smoke
might become a danger before toxicity from the smoke itself would.
Quelle

In diesem Forum meint einer, dass billiges, angebrochenes Fluid mit der Zeit einen Biofilm aufgewiesen hat:
I have seen it go bad in both the machine and the jug. In both cases it involved cheap non branded fog juice and it developed white strands/jelly substance or slime floating around in it - which blocks the heaters and pumps. It is actually called "biofilm" and is a large colony of bacteria. once the jug is opened bacteria enter the fog juice from the air, off your hands or *** - just a fact of nature. When there is no chlorine present in water or no bactericide present in the solution the bacteria multiply at first you don't see anything but eventually you will get this slime. By the way this is what you see around the overflow on washbasins that are not cleaned correctly.

The problem is that fog juice is usually made from de-ionised water with some alcohol and glycerine - with time the alcohol can evaporate and bacteria can grow.

This is one reason you should never drink de-ionised water or any water that is not chlorinated.

I now throw fog juice away after it has been opened and I empty and clean the tanks.
Quelle

Interessantes Hintergrundwissen über Nebelmaschinen:

https://spectrum.rosco.com/how-a-fog-machine-works

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