Agar gel thermal conductivity testing

Shown below are the photos of agar gel thermal conductivity testing using a thermal needle, according to ASTM D5334. The size of the thermal needle is 1.6 mm in diameter and 12 cm in length.

The thermal conductivity of agar gel (with 5-gram agar powder per liter of water) is tested, as part of the quality control measures when we test soil or similar gel-like materials.

Needle probe in agar gel
Standalone needle probe

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