Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper)

The Lenz-Laborglas round bottom test tube with NS 14/23 socket (Ø 18 mm × 180 mm) is crafted from high-quality DURAN® borosilicate glass, known for its excellent thermal and chemical resistance. Supplied without a stopper, this test tube is ideal for laboratory setups requiring customised closures or flexible integration with glass-joint systems.

Key Features:

• Brand: Lenz-Laborglas
• Shape: Round bottom for even heating and effective mixing
• Socket Size: NS 14/23 ground-joint for compatibility with standard lab apparatus
• Dimensions: Ø 18 mm × 180 mm length
• Material: DURAN® tubing – high-performance borosilicate glass offering durability and resistance
• Closure: Supplied without stopper (no closure included)
• Application: Suitable for heating, distillation, chemical reactions, and modular glass-joint setups

The Lenz-Laborglas NS 14/23 test tube delivers precision manufacturing, long-term durability, and flexible closure options—making it a trusted choice for scientific, educational, and industrial laboratory environments.

Frequently Asked Questions

1. What is the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper) used for?

It is crafted from high-quality DURAN® borosilicate glass, known for its excellent thermal and chemical resistance. Supplied without a stopper, this test tube is ideal for laboratory setups requiring customised closures or flexible integration with glass-joint systems.

2. Is the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper) suitable for heating, distillation, chemical reactions, and modular glass-joint setups?

Yes. It is designed for heating, distillation, chemical reactions, and modular glass-joint setups, and offers round bottom for even heating and effective mixing and NS 14/23 ground-joint for compatibility with standard lab apparatus to support this kind of work.

3. What shape and socket size does the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper) have?

It has round bottom for even heating and effective mixing, NS 14/23 ground-joint for compatibility with standard lab apparatus and Ø 18 mm × 180 mm length, and is supplied under manufacturer part number 5700030.

4. What is the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper) made from and what features does it include?

It is made from DURAN® tubing – high-performance borosilicate glass offering durability and resistance. It also offers supplied without stopper (no closure included).

5. How does the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm (DURAN® Tubing, Without Stopper) compare with the Ratiolab Test Tube 16×100 mm PS Round Bottom, Pack of 1000 from Ratiolab?

For heating, distillation, chemical reactions, and modular glass-joint setups, the Lenz-Laborglas model is the better choice, offering round bottom for even heating and effective mixing, NS 14/23 ground-joint for compatibility with standard lab apparatus and Ø 18 mm × 180 mm length. The Ratiolab model offers dimensions of 16 mm diameter x 100 mm height and a capacity of 12 mL nominal as an alternative, while the Lenz-Laborglas model's round bottom for even heating and effective mixing and NS 14/23 ground-joint for compatibility with standard lab apparatus help make it a strong fit for heating, distillation, chemical reactions, and modular glass-joint setups.