Entonnoir à double tranchant et à tube capillaire

The thick-walled borosilicate glass body is resistant to chemicals and thermal variations; the ground-glass joint surfaces fit securely and leak-tight onto the pycnometer mouth. The double-edged profile ensures fixed positioning and maintains form during scraping/cleaning operations. The integrated capillary side tube helps release internal air and excess liquid in a controlled manner, balancing pressure during filling. This reduces the risk of trapped air while transferring the sample and liquid, ensures clearer meniscus formation at the pycnometer neck, and improves repeatability of weight-to-volume values. The narrow-tolerance funnel orifice supports loss-free flow of fine material. Designed for compatibility with the bottle-type pycnometers of various capacities (approximately from 250 mL to 5000 mL); creates a direct workflow with hook-type balances, volumetric flasks, and water baths commonly used in laboratories. Balanced weight distribution and wide seating surface provide stability on the benchtop; capillary tube and body connections are reinforced against impact and leakage.