Normax Volumetric Flask Clear Glass Plastic Stopper 250mL

Normax Volumetric Flask Clear Glass with Plastic Stopper 31 686 36 (250 mL)

The Normax Volumetric Flask 31 686 36 (250 mL) offers Class A accuracy for preparing standard solutions, calibration reagents, and precise dilutions. Its borosilicate glass body delivers excellent clarity, strong chemical resistance, and stable thermal performance. The plastic stopper seals the flask securely, while the blue graduation mark provides a sharp reference point for accurate meniscus reading. Manufactured in accordance with ISO 1042, this flask is supplied with a Certificate of Performance, ensuring verified and traceable accuracy for analytical and regulated laboratory environments.

Key Features

• Class A Precision: Meets ISO 1042 standards for high-accuracy volumetric work.

• Plastic Stopper: Provides a lightweight, secure seal that prevents contamination and evaporation.

• Borosilicate Glass Construction: Offers excellent chemical resistance, thermal stability, and durability.

• Blue Graduation Mark: Ensures high contrast for consistent and precise meniscus alignment.

• 250 mL Capacity: Ideal for medium-volume preparations such as standard solutions, titration reagents, and calibration standards.

• Certificate of Performance: Confirms traceable calibration suitable for GMP/SOP workflows.

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

Specifications

Applications

• Analytical chemistry: Standard solution preparation and precise dilution work.

• Pharmaceutical & QC labs: Suitable for validated, regulated workflows with certified accuracy.

• Environmental laboratories: Useful for preparing calibration reagents, buffers, and indicators.

• Industrial R&D: Supports formulation and development work requiring controlled volumetric accuracy.

• Academic & research institutions: Helps students practice accurate volumetric techniques.

Handling & Maintenance

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

• Rinse with distilled or deionized water before precise measurements.

• Dry the exterior surface to ensure correct meniscus reading.

• Avoid sudden temperature changes to maintain glass integrity.

• Store upright and keep the stopper separate to prevent moisture buildup.