DURAN® Amber Glass Volumetric Flask 500 ml, Class A, White Graduation, PE Stopper – Volumetric Flask NS 19/26

Introduction to Duran 500 ml amber volumetric flask

The DURAN® 500 ml volumetric flask (code 246764459) from Duran (Germany) is a high-precision volumetric instrument made from amber borosilicate 3.3 glass. It is specialized for preparing, making up, and storing light-sensitive solution samples in laboratories. The instrument complies with Class A accuracy and includes a polyethylene (PE) stopper.

Outstanding features

• Amber borosilicate 3.3 glass blocks UV radiation and strong light to protect solutions.
• Volume accuracy meets Class A standards, complete with a batch certificate for quality control and traceability.
• A distinct white ring mark provides high contrast, aiding precise meniscus reading.
• Standard ground neck size NS 19/26, fitted with a tightly sealing PE plastic stopper to minimize solvent loss and evaporation.

Applications

• Preparing standard solutions and light-sensitive reagents in pharmaceutical and chemical testing.
• Diluting analytical samples to precise volume ratios for testing procedures.
• Preserving and storing solutions prone to photochemical degradation in the laboratory.

Frequently Asked Questions

Does the Duran 500 ml amber volumetric flask have a quality certificate?
The product meets Class A accuracy and includes a batch certificate from Duran.

What stopper size and material does this flask use?
The flask has a standard ground joint size NS 19/26 and comes with a polyethylene (PE) stopper.