Normax Volumetric Flask Amber Glass with Plastic Stopper 31 886 11 (20 mL)
The Normax Volumetric Flask 31 886 11 (20 mL) provides Class A volumetric accuracy while offering strong protection for light-sensitive reagents. Its amber borosilicate glass minimizes exposure to UV and visible light, helping maintain chemical stability during storage and solution preparation. The plastic stopper forms a lightweight, secure seal, and the white graduation mark provides a clear, high-contrast reference for precise meniscus alignment. Produced according to ISO 1042, each flask comes with a Certificate of Performance, ensuring verified and traceable calibration.
Key Features
Class A Accuracy: Complies with ISO 1042 standards for high-precision volumetric measurement.
Amber Borosilicate Glass: Protects photoreactive chemicals from harmful light exposure.
Plastic Stopper: Provides a secure and contamination-free seal.
White Graduation Mark: Offers excellent contrast for consistent and accurate readings.
20 mL Capacity: Suitable for preparing small-volume standard solutions, calibration reagents, and laboratory dilutions.
Certificate of Performance: Ensures validated calibration for GMP/SOP and QC workflows.
Durable Materials: Resistant to chemicals and thermal variation for long-term use.
Specifications
| Parameter | Description |
|---|---|
| Brand | Normax |
| Model | 31 886 11 |
| Capacity | 20 mL |
| Accuracy Class | Class A |
| Material | Amber Borosilicate Glass |
| Stopper Type | Plastic |
| Graduation | White |
| Standard | ISO 1042 |
| Certificate | Included |
| Light Protection | Yes (Amber Glass) |
| Autoclavable | Flask yes; stopper depends on plastic type |
| Chemical Resistance | Excellent |
Applications
Light-sensitive reagents: Iodine, silver nitrate, ferric solutions, phenolic reagents, and similar photoreactive chemicals.
Analytical chemistry: Preparation of small-volume standard solutions and precise dilution work.
Pharmaceutical & QC laboratories: Ideal for validated workflows requiring certified volumetric accuracy.
Environmental testing: Suitable for trace-level calibration and indicator solution preparation.
Academic & research settings: Supports accurate volumetric analysis practice.
Handling & Maintenance
Clean gently using mild, non-abrasive detergent to preserve the white graduation line.
Rinse with distilled or deionized water before volumetric use.
Dry the outer surface for accurate meniscus alignment.
Avoid sudden temperature changes to protect the amber coating and glass structure.
Store upright and remove the stopper to prevent moisture buildup.
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