5. Apparatus
5.1 Flask - A side-arm distillation flask, as shown in Fig. 1, conforming to the following dimensions:
5.2 Condenser Tube - A tapered glass condenser, as shown in Fig. 2 and Fig. 3, having the following dimensions:
5.3 Source of Heat - A heat source consisting of a bunsen or meker-type burner (Note 1) or an electric heater. The electric heater3 shall have an output variable of 750 W and an upper refractory with dimensions as shown in Fig. 4. The temperature of the heater shall be controlled by a variable transformer or rheostat suitable for the voltage used, and shall be fitted with a clamp for mounting on a vertical support rod.
NOTE 1 - An artificial gas model used with natural gas has been found to give a uniform and easily controlled source of heat.
5.4 Flask Shield and Cover for Flame Distillation - A steel shield (preferably stainless) lined with 3-mm Transite board, non-asbestos, with two-part cover made from 6-mm Transite board of the form and dimensions shown in Fig. 5.
5.5 Flask Shield and Cover for Electric-Heater Distillation - A steel shield (preferably stainless) fitted with mica windows, and a cover of the same construction and dimensions as those for flame distillation (5.4) except for the height of the shield (see Fig. 6).
5.6 Gauze for Flame Distillation - Two sheets of 1.0-mm opening wire gauze made of 0.56-mm diameter nickel-chromium wire measuring a minimum of 125 mm in diameter or (125 by 125-mm) square.
5.7 Burner Chimney for Flame Distillation - Construct a cylindrical metal shield approximately 100 mm high, 95 to 105 mm in diameter, and having a peephole 25 mm in diameter centered about 32 mm below the ring support. The top of the shield shall be flanged to permit its being suspended from the ring support.
5.8 Receivers - Erlenmeyer flasks or beakers having a nominal capacity of 50 to 125 mL, and tared to the nearest 0.1 g.
5.9 Balance and Masses, accurate to 0.1 g.
5.10 Thermometer - An ASTM High Distillation Thermometer having a range from -2 to +400°C and conforming to the requirements for Thermometer 8C as prescribed in Specification E 1.