Heavy Duty Poly Storage Tanks - Bailiff Enterprises
Specific Gravity
Plastic
Storage Tanks are rated with the maximum specific gravity
of the liquid a
tank can hold. A tank with a rating of 1.5 specific
gravity (SG) should not be put into service holding a
liquid that has a 1.8 SG, as an example. Our
Double Wall Chemical
Storage Tanks are rated at 1.9 SG or above. We can even
make tanks with higher ratings, such as 2.2 SG, for
specific applications.
...
The specific gravity of a
liquid tells you how much more or less dense the liquid
is than water. Water has a specific gravity of 1.00. A
liquid that is more dense than water, has a specific
gravity greater than 1. A liquid less dense than
water has a specific gravity is less than 1.
To calculate the specific
gravity of a liquid, take the weight of that liquid and
divide it by the weight of water. The weight of water
will vary slightly based on temperature and pressure but
for our purposes you can figure it at 8.34 pounds per
gallon.