Softening Point Apparatus - Precision Temperature Control For Material Testing | Enhanced Repeatability And Reproducibility Up To 4.0°c

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Heat the material to a temperature between 75- and 100-c above its softening point stir until it is completely fluid and free from air Bubbles and water and filter if necessary through is Sieve 30 (see IS: 460-1953). Place the rings previously heated to a temperature approximating to that of the molten material. On a metal Plate which has been coated with mercury or mixture of equal parts of glycerin and dextrin and fill with sufficient melt to give an excess above the level of the ring when cooled. After cooling for 30 minutes in air level the material in the ring by removing the excess with a warmed sharp knife.

SOFTENING POINTREPEATABILITY REPRODUCTABILITY
Below 30-c2.0-c4.0-c
30-c to 80-c1.0-c 2.0-c
Above 80-c 2.0-c 4.0-c