5.2 Sample Container—For referee work, use the glass
sample jar as shown in Fig. 1. For routine tests, it is permissible
to use a cylindrical, clear glass jar with a flat bottom of 30 to
32.4 mm internal diameter, 115 to 125 mm in external height,
and a wall thickness no greater than 1.6 mm as specified in Test
Method D2500, or an ordinary 125-mL oil sample bottle if it
meets these requirements.