2. Apparatus
a. Evaporating dishes: Dishes of 100-mL capacity made of one of the following materials:
1) Porcelain, 90-mm diam.
2) Platinum—Generally satisfactory for all purposes.
3) High-silica glass.*
b. Muffle furnace for operation at 550°C.
c. Steam bath.
d. Desiccator, provided with a desiccant containing a color indicator of moisture concentration or an instrumental indicator.
e. Drying oven, for operation at 103 to 105°C.
f. Analytical balance, capable of weighing to 0.1 mg.
g. Magnetic stirrer with TFE stirring bar.
h. Wide-bore pipets.†
i. Graduated cylinder.
j. Low-form beaker.‡