ASTM D3523 Test Method for Spontaneous Heating Values of Liquids and Solids (Differential Mackey Test)
6. Apparatus
6.1 Spontaneous Heating Apparatus - See Fig. 1 and Fig. 2.
6.2 Thermocouples, 30-gage, iron-constantan, Type J. Two are required.
6.3 Strip Chart Temperature Recorder, two-channel or multipoint, capable of 0.5 K resolution at test temperature.
6.4 Hot Plate, capable of uniformly heating entire bottom surface of spontaneous heating apparatus.
7. Materials
7.1 Cotton Gauze, surgical.
7.2 Water, conforming to Specification D1193, Type III.
