Specific gravity is
determined by taking a sample of known size, weighing
it in air, then weighing it in a predefined test
solution of a precise density, and then calculating
the difference. The resultant is the specific
The Model ASG is used to
determine the specific gravity of uncompounded,
compounded, and reclaimed stocks of unvulcanized
rubber and rubber-like materials. It conforms with
the requirements of ASTM.
The Model ASG comes
complete with a hookup to a PC with BENZWIN2000
software for automated data collection and control.
The software shows dry weight, wet weight and
specific gravity for each test. The average, standard
deviation and coefficient of variation is
automatically calculated after the second test, and
the minimum and maximum values are also presented as
The software also
calculates volume swell by comparing historic data
with the sample after aging. The difference is then
presented in percent change.
All data is presented
in a spreadsheet format, and creating histograms is
as easy as clicking on the selected data. All reports
can be printed, exported to a spreadsheet, or stored
for later analysis.
To see actual
screen shots and a detailed overview of features and
operation of Benzwin 2000 software click the link
Specific Gravity Test