To test the specific gravity of liquids first pour a sample of liquid into a container.
Gravity test plastic sheet.
It is then immersed in a liquid and its apparent mass upon immersion is measured.
1 1 these test methods describe the determination of the specific gravity relative density and density of solid plastics in forms such as sheets rods tubes or molded items.
One of the astm test methods for plastic commonly seen on data sheets is the test for density and specific gravity sg.
Next make sure the liquid is the same temperature that the hydrometer is calibrated to or you will get an incorrect reading.
Astm d792 98 describes the determination of the specific gravity relative density and density of solid plastics in forms such as sheets rods tubes or molded items.
There are chiefly two test methods are involved.
Test method a for testing solid plastics in water and test method b for testing solid plastics in liquids other than water.
This test is often seen with the designation astm d792.
1 2 1 test method a for testing solid plastics in water and.
The astm test method describes the determination of specific gravity and density of solid plastics of different forms such as sheets rods tubes or other molded items.
You ll need to use a container that is deep enough to allow a hydrometer to float.
1 2 two test methods are described.
Astm d297 93 16 rubber astm d792 00 plastic jis k6268a jis k7112 plastic.