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Filter Flasks are thick-walled and have side tubulation for 3/8in (9.5mm) ID vacuum tubing. GW-75 2L and GW-76 4L flasks are often used as pycnometers, and GW-76 also meets ASTM and AASHTO specifications for use as a vacuum container for weighing in air only. GW-74 1L flasks can be used in line with SGA-105 #4 Drierite granules as a moisture trap for vacuum pump protection.
Neoprene Stoppers w/ Glass Tube have a 3/8in (9.5mm) hole and a glass tube, and are available in specific models to fit each Filter Flask. Neoprene Stoppers only are also available to fit each flask. GW-74 1L unit uses a No. 8 Stopper while GW-75 2L flask works with No. 9 Stopper and GW-76 4L model accommodates the No.12 Stopper.
GW-74: 1L, graduated
GW-75: 2L, graduated
GW-76: 4L, graduated
GW-74: 5.39 x 9.37in (137 x 238mm) dia. x H
GW-75: 6.61 x 11.5in (168 x 292mm) dia. x H
GW-76: 7.8 x 14.02in (198 x 356mm) dia. x H
GW-74: 3.0lb (1.36kg)
GW-75: 3.0lb (1.36kg)
GW-76: 6.0lb (2.72kg)
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