Picnómetro (tipo frasco de vidrio)

Pyknometer (Glass Jar Type) is a thick-walled borosilicate glass vessel used to determine specific gravity (relative density) and water absorption of fine aggregates.

The wide-mouth design allows easy, loss-free transfer of material into the jar; smooth internal surfaces reduce particle adhesion during agitation and support repeatable measurements.

BS 812:2, BS 1377-2, ASTM C128, ASTM D854, AASHTO T84