Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm, DURAN® Tubing, PE Stopper

The Lenz-Laborglas round bottom test tube with NS 14/23 socket (Ø 18 mm × 180 mm) is constructed from premium DURAN® borosilicate glass, offering excellent thermal and chemical resistance. Supplied with a polyethylene (PE) stopper, this test tube is ideal for laboratory workflows requiring reliable sealing—such as heating, mixing, and reaction applications.

Key Features:

• Brand: Lenz-Laborglas
• Shape: Round bottom for uniform heating and effective mixing
• Socket Size: NS 14/23 ground joint for secure compatibility with standard glassware
• Dimensions: Ø 18 mm × 180 mm length
• Material: DURAN® tubing – high-performance borosilicate glass known for durability and chemical resistance
• Closure: PE (polyethylene) stopper included for tight and safe sealing
• Application: Suitable for heating, distillation, chemical reactions, and general laboratory glassware use

The Lenz-Laborglas NS 14/23 test tube delivers precision craftsmanship, durable materials, and a reliable sealing solution—making it a dependable choice for research, analytical, and educational 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, PE Stopper used for?

It is constructed from premium DURAN® borosilicate glass, offering excellent thermal and chemical resistance. Supplied with a polyethylene (PE) stopper, this test tube is ideal for laboratory workflows requiring reliable sealing, such as heating, mixing, and reaction applications.

2. Is the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm, DURAN® Tubing, PE Stopper suitable for heating, distillation, chemical reactions, and general laboratory glassware use?

Yes. It is designed for heating, distillation, chemical reactions, and general laboratory glassware use, and offers round bottom for uniform heating and effective mixing and NS 14/23 ground joint for secure compatibility with standard glassware 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, PE Stopper have?

It has round bottom for uniform heating and effective mixing, NS 14/23 ground joint for secure compatibility with standard glassware and Ø 18 mm × 180 mm length, and is supplied under manufacturer part number 5700130.

4. What is the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm, DURAN® Tubing, PE Stopper made from and what features does it include?

It is made from DURAN® tubing – high-performance borosilicate glass known for durability and chemical resistance. It also offers PE (polyethylene) stopper included for tight and safe sealing.

5. How does the Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm, DURAN® Tubing, PE Stopper compare with the Thermo Nunc Test Tubes 4 mL PS Round Bottom 70 x 11 mm Non-Sterile (Pack of 3600) from Thermo Scientific?

For heating, distillation, chemical reactions, and general laboratory glassware use, the Lenz-Laborglas model is the better choice, offering round bottom for uniform heating and effective mixing, NS 14/23 ground joint for secure compatibility with standard glassware and Ø 18 mm × 180 mm length. The Thermo Scientific model offers a volume of 4 mL and a size of 70 x 11 mm as an alternative, while the Lenz-Laborglas model's round bottom for uniform heating and effective mixing and NS 14/23 ground joint for secure compatibility with standard glassware help make it a strong fit for heating, distillation, chemical reactions, and general laboratory glassware use.