Normax Volumetric Flask Clear Glass with Glass Stopper 25mL

Normax Volumetric Flask Clear Glass with Glass Stopper 31 686 15V 25mL

The Normax Volumetric Flask 31 686 15V (25 mL) delivers high-precision Class A performance for laboratories that prepare accurate standard solutions. Its borosilicate glass body provides excellent chemical durability, thermal stability, and long-lasting clarity. The ground glass stopper closes the flask securely, while the blue graduation line gives a sharp reference point for reliable meniscus reading. Normax ensures ISO 1042 compliance and includes a Certificate of Performance, enabling users to work confidently in analytical and regulated environments.

Key Features

• Class A Accuracy: Meets ISO 1042 standards and supports precise volumetric work.

• Ground Glass Stopper: Forms an airtight seal that protects solutions from evaporation and contamination.

• Borosilicate Glass: Resists chemicals, heat, and thermal shock during routine laboratory use.

• Blue Graduation Line: Offers high contrast to help users read the meniscus accurately.

• 25 mL Capacity: Suitable for preparing standard solutions, calibration samples, and controlled dilutions.

• Certificate of Performance: Verifies calibration traceability for SOP- and GMP-based workflows.

• Clear Glass Construction: Allows easy inspection of solution clarity and color changes.

Specifications

Applications

• Analytical chemistry: Users prepare precise standard solutions and micro-dilutions.

• Pharmaceutical & QC labs: Teams rely on certified Class A accuracy for regulated testing.

• Environmental labs: Technicians measure indicators and small-volume reagents.

• Industrial laboratories: Researchers prepare formulations and run small-scale experiments.

• Academic & research settings: Students practice accurate volumetric techniques.

Handling & Maintenance

• Clean with mild, non-abrasive detergent to protect the graduation mark.

• Rinse with distilled or deionized water before critical measurements.

• Dry the outside to ensure correct meniscus reading.

• Keep the flask away from sudden temperature changes to avoid thermal stress.

• Store upright with the stopper removed to prevent moisture buildup inside.