Flat Bottom Flask Long Neck Without Ground Joint

The Flat Bottom Flask with Long Neck Without Ground Joint is laboratory glassware used in procedures involving liquid heating, simple reflux, controlled evaporation and reactions in liquid media. The flat bottom allows stable placement on flat surfaces and compatible heating systems, while the long neck facilitates the use of stoppers, adapters or external connections in open assemblies. Manufactured from borosilicate glass 3.3, it provides chemical resistance suitable for common laboratory reagents and thermal stability for controlled heating routines. It is suitable for analytical, preparation and reaction procedures that do not require closed systems or ground joint connections. It is not suitable for pressurized operations or assemblies requiring hermetic sealing.

Characteristics

• Flat bottom design allowing stable placement on flat surfaces;

• Long neck without ground joint, compatible with stoppers and external connections;

• Made from borosilicate glass 3.3 with suitable chemical resistance;

• Transparent structure for visual monitoring of procedures;

• Suitable for heating, simple reflux and controlled evaporation procedures.

Technical Specifications

• Material: borosilicate glass 3.3;

• Bottom type: flat;

• Neck: long, without ground joint;

• Available capacities: 250 mL, 500 mL, 1000 mL, 2000 mL, 6000 mL;

• Transparency: clear.

Includes

• 1x Flat Bottom Flask Long Neck Without Ground Joint.

FAQ

• Q: Can this flask be used for direct heating?
  A: Borosilicate glass 3.3 supports controlled and gradual heating, provided proper heat distribution is ensured and severe thermal shock is avoided.

• Q: What is the difference between this model and a round-bottom flask?
  A: The flat bottom allows stable placement on flat surfaces, while round-bottom flasks require dedicated supports.

• Q: Is this flask suitable for reflux systems?
  A: Yes, for simple and open reflux setups that do not require ground joint sealing.

• Q: Can it be used in pressurized systems?
  A: No. The flask is not designed for pressurized applications.

• Q: Does the long neck include a ground joint?
  A: No. The neck does not include a ground joint and is intended for use with compatible stoppers or external fittings.