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.
Gravity test plastic sheet.
1 2 1 test method a for testing solid plastics in water and.
Astm d297 93 16 rubber astm d792 00 plastic jis k6268a jis k7112 plastic.
You ll need to use a container that is deep enough to allow a hydrometer to float.
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.
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.
This test is often seen with the designation astm d792.
Test method a for testing solid plastics in water and test method b for testing solid plastics in liquids other than water.
It is then immersed in a liquid and its apparent mass upon immersion is measured.
Density refers to the mass per unit volume of a material whereas sg refers to a measure of the ratio of mass of a given volume of material at 23 c to the same volume of deionized water.
The mass of the specimen of the solid plastic in air is first measured.
Next make sure the liquid is the same temperature that the hydrometer is calibrated to or you will get an incorrect reading.
1 2 two test methods are described.
To test the specific gravity of liquids first pour a sample of liquid into a container.