Will lime water (calcium hydroxide) work? It could be prone to precipitation
but you could probably test it first.

Kajal Ghoshroy
LC Museum of Natural History
-----Original Message-----
From: Jim Mallerdino [mailto:[log in to unmask]]
Sent: Monday, April 02, 2001 9:55 AM
To: [log in to unmask]
Subject: Faux Milk


Hello,

I am working on an exhibit showing milk being processed through a plant.

It is a small unit maybe 8' long x 6' height.  We are using an air pump
to bubble through a liquid which simulates milk (Plexi Polish).  Texture

and color are great. The liquid is enclosed in clear PVC tubing. The
bubbling actually makes the liquid seem to be circulating through the
system even though it is actually standing still.  My problem is the
plexi polish evaporates quite rapidly, 2-1/2 gallons a week. The entire
system has only 5 gallons total in it.  I believe that the plexi polish
is alcohol based hence the evaporation. Also contributing to the
evaporation is the amount of airflow needed to simulate circulation
through the system. At the air release we have incorporated a Heppa
filter and recovery reservoir. They are always completely dry.
The system originally had a main tank from which we pumped and
circulated the liquid through the pipes. However this was constantly
overheating and leaking and difficult to maintain.
Has anyone had any experience simulating milk? Would you happen to have
any suggestions on a liquid or chemical formula which we could use with
in our existing system?
I know oil works really well as far as being non evaporative. However,
it is not the right color and can't be dyed white to look like milk. We
also tried machine tool/cutting fluid but as it sat overnight it left
residue with in the pipes. Any help is greatly appreciated.


Thanks,

Jim Mallerdino

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