DURAN® Volumetric Flask 20 ml Class AW, Blue Graduation, PE Stopper – NS 10/19

Introduction to DURAN 20 ml Class AW volumetric flask

The DURAN 20 ml Class AW volumetric flask (order code 246781258) is a high-precision volumetric instrument manufactured by Duran (Germany), specifically used for preparing and measuring solution volumes in laboratories. The body is made of durable borosilicate 3.3 glass, offering superior thermal and chemical resistance. The product comes complete with a polyethylene (PE) stopper and a batch quality certificate.

Outstanding features

• Borosilicate 3.3 glass material with good thermal resistance, durable against chemical corrosive effects.
• Class AW volumetric accuracy with a clear blue graduation mark, supporting easy meniscus alignment.
• Standard NS 10/19 neck size, supplied with a tight-fitting PE plastic stopper, minimizing chemical evaporation.
• Includes a batch certificate, convenient for equipment calibration and traceability.

Applications

• Preparing standard solutions and calibration solutions in quantitative analysis.
• Performing sample dilution procedures with high volumetric accuracy.
• Used in physicochemical testing, pharmaceuticals, food, and environmental monitoring.
• Serving teaching and research activities in laboratory institutes and universities.

Frequently Asked Questions

Does this DURAN 20 ml volumetric flask come with a certificate?
The product comes with a batch certificate from Duran, making it easy for testing laboratories to archive records and trace data.

What type of stopper does the flask have?
The flask uses a standard NS 10/19 polyethylene (PE) stopper, ensuring a tight seal during handling and solution storage.