Normax Volumetric Flask Clear Glass with Glass Stopper 31 686 63V 2000 mL
The Normax Volumetric Flask 31 686 63V (2000 mL) delivers Class A precision for laboratories that need accurate preparation of large-volume standard solutions. Its borosilicate glass body provides excellent thermal stability, chemical durability, and optical clarity. The ground glass stopper secures the contents tightly, and the blue graduation mark gives a sharp reference point for precise meniscus alignment. Normax follows ISO 1042 specifications and supplies a Certificate of Performance, giving users verified and traceable calibration for regulated analytical work.
Key Features
Class A Accuracy: Meets ISO 1042 requirements and supports high-precision volumetric preparation.
Ground Glass Stopper: Forms a tight seal that prevents evaporation and protects solution quality.
Borosilicate Glass: Resists thermal shock, chemical attack, and heavy routine use.
Blue Graduation Mark: Offers high contrast for clear and reliable meniscus reading.
2000 mL Capacity: Suitable for preparing stock solutions, calibration standards, titration reagents, and large-batch dilutions.
Certificate of Performance: Verifies calibration traceability for SOP/GMP laboratory workflows.
Clear Glass Construction: Helps users check clarity, purity, and visual characteristics of solutions.
Specifications
| Parameter | Description |
|---|---|
| Brand | Normax |
| Model | 31 686 63V |
| Capacity | 2000 mL (2 L) |
| Accuracy Class | Class A |
| Material | Borosilicate Glass |
| Stopper Type | Ground Glass |
| Graduation | Blue |
| Standard | ISO 1042 |
| Certificate | Included |
| Autoclavable | Yes |
| Chemical Resistance | Excellent |
Applications
Analytical chemistry: Preparation of large-volume standard solutions and controlled dilutions.
Pharmaceutical & QC labs: Supports regulated workflows that require verified volumetric accuracy.
Environmental testing: Suitable for mixing calibration reagents, buffers, and indicator solutions.
Industrial R&D: Useful for formulation, process development, and large-scale solution preparation.
Academic & research settings: Helps students and researchers practice precise volumetric techniques.
Handling & Maintenance
Wash with mild, non-abrasive detergent to protect the graduation line.
Rinse with deionized or distilled water before accurate measurements.
Dry the exterior to ensure a correct meniscus reading.
Avoid sudden temperature changes to prevent thermal shock.
Store upright with the stopper removed to prevent internal moisture buildup.
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