ASTM D4312 Test Method for Toluene-Insoluble (TI) Content of Tar and Pitch (Short Method)
5. Apparatus
5.1 Extraction Apparatus, flask with metal cap condenser as shown in Fig. 1.
5.2 Extraction Thimbles, Alundum AN 485 coarse (formerly RA 98), 30 mm in diameter by 80 mm in height with flat bottom.
5.3 Sieves, U.S. Standard 600 µm (No. 30) and 250 µm (No. 60), conforming to Specification E11.
5.4 Heater, having a minimum capacity of 300 W per unit. A hot plate or other heaters that maintain the proper reflux rate are acceptable.
6. Reagents
6.1 Toluene, Industrial Pure, meeting Specification D362.
6.2 Acetone, meeting the requirements of Specification D329.
7. Hazards
7.1 Since toluene is a toxic and flammable substance, all working areas should be efficiently hooded and kept free of sparks and flames.
