Ertco Pycnometer, 11.5 mL capacity, 1/8" (3.2-mm) hole in lid

This aluminum-alloy pycnometer is designed to withstand pressure necessary to force air from viscous material and cause it to completely fill pycnometer shell. Each piece of the instrument is cut from solid bar stock to ensure an absence of pits or cavities. Close manufacturing tolerances ensure test material will not be forced into threads. To use, tare balance to pycnometer weight, then fill pycnometer with test material and cover container with lid. Screwing down lid forces excess material out through a 1/8" (3.2 mm) hole. Reweigh filled pycnometer and determine density by weighing pycnometer filled with water and computing the difference.