Re: I am looking for specific gravity of household items,

Fortunatly for you, figuring out the specific gravity of a liquid is fairly 
easy. I will first start with a definition of specific gravity which I 
found at the following web site:
http://www.polymerland.com/technical/tip97jun.html


SPECIFIC GRAVITY 

 DEFINITION: Specific Gravity is the ratio of the density of a material as 
compared to the density of water at standard atmospheric pressure
 (1 ATM) and room temperature (73F). Because it is a ratio, it has no units 
of measure. However, since the density of water (at STP) is 1
 gram/cm3, the density of the material being considered is the same as its 
specific gravity when working in SI units. For instance, a material
 with a specific gravity of 1.05 has a density of 1.05 gm/cm3 (.0378 
lbs./in3). 

To calculate the specific gravity of shampoo, you would need a container of 
known volume and an analytical balance. If you do not have access to an 
analytical balance you could probably visit any reputable jewelers and ask 
to use their's as long as you explain what it's for (analytical balances 
are also used for illegal purposes). What you would do is to weigh the 
container of known volume. You would then add a known volume of the liquid 
that you would like to the specific gravity. After you have the two 
weights, you would subtract the weight of just the container from the 
combined weight of the container and liquid. This leaves you with the 
weight of the liquid. You can then take this weight and divide it by the 
volume of liquid you had in your container. This final result gives you the  
specific gravity if you use SI units, which would be grams and milliliters 
in this case. 

If you would like to know how to measure the specific gravity of solids, I 
would visit the site below for plans on building a simple scale to measure 
specific gravity.

http://www.internet1.net/~dlclark/scale.htm