The mass of the specimen of the solid plastic in air is first measured.
Gravity test plastic sheet.
1 2 two test methods are described.
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.
One of the astm test methods for plastic commonly seen on data sheets is the test for density and specific gravity sg.
Densimeter specific gravity tester is an advanced density testing equipment for measuring solid and liquid samples with high precision sensor and auto weighing function.
Next make sure the liquid is the same temperature that the hydrometer is calibrated to or you will get an incorrect reading.
1 2 1 test method a for testing solid plastics in water and.
You ll need to use a container that is deep enough to allow a hydrometer to float.
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.
Test method a for testing solid plastics in water and test method b for testing solid plastics in liquids other than water.
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.
To test the specific gravity of liquids first pour a sample of liquid into a container.
It is then immersed in a liquid and its apparent mass upon immersion is measured.
Astm d297 93 16 rubber astm d792 00 plastic jis k6268a jis k7112 plastic.