DURAN® amber volumetric flask, 25 ml, Class A, white graduation, PE stopper – NS 10/19

Introduction to Duran 25 ml amber volumetric flask

The DURAN® 25 ml volumetric flask (code 246761453) from Duran (Germany) is a high-precision volumetric measuring instrument made from amber borosilicate 3.3 glass. It is specifically designed to protect light-sensitive solutions from the effects of UV rays and strong light. The product meets stringent measurement requirements in laboratory sample preparation and analysis.

Outstanding features

• Amber borosilicate 3.3 glass material minimizes light radiation and UV rays that could degrade samples.
• Achieves Class A accuracy with a sharp white ring mark, assisting accurate 25 ml volume alignment.
• Standard ground neck size NS 10/19, supplied with a tight-fitting polyethylene (PE) stopper.
• Each product includes a batch certificate, meeting laboratory quality traceability requirements.

Applications

• Preparing and calibrating standard solutions and light-sensitive chemicals in chemical analysis.
• Accurate sample dilution for pharmaceutical, cosmetic, and microbiological testing.
• Preserving and temporarily storing calibration solutions requiring protection from direct light.

Frequently Asked Questions

Does this volumetric flask come with a certificate?
The product comes with a batch certificate from Duran to ensure accuracy and traceability.

What material is the stopper made of and what size is the neck?
The flask is equipped with a polyethylene (PE) stopper matching standard ground joint size NS 10/19.