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.