Our Narrow Mouth Reagent Bottle 250 mL is the ideal solution for precise liquid storage and controlled dispensing in compact laboratory setups. Crafted from high-clarity Borosilicate 3.3 glass, this bottle is engineered for maximum chemical resistance. The integrated Plastic (PTFE/PP) Stopcock provides an airtight seal and allows for meticulous, drop-by-drop dispensing of high-value reagents without the risk of “seizing” or leaking.
Key Features
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Compact 250 mL Capacity: Perfectly sized for small-batch chemical storage, titration reagents, and specialized analytical solutions.
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Premium Borosilicate 3.3 Glass: Superior resistance to thermal shock and chemical erosion; safe for use with strong acids and volatile solvents.
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Precision Plastic Stopcock: The high-grade PTFE/PP stopcock offers smooth rotation and a leak-proof seal, requiring no grease for operation.
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Evaporation Protection: The narrow mouth design significantly reduces the surface area of the liquid exposed to air, preserving the stability of sensitive reagents.
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Permanent Volumetric Markings: Features durable, fired-on white enamel graduations for quick volume assessment at a glance.
Technical Specifications
| Specification | Details |
| Capacity | 250 mL |
| Bottle Material | Borosilicate 3.3 Glass |
| Stopcock Material | High-Grade PTFE / Polypropylene |
| Mouth Type | Narrow Mouth |
| Thermal Resistance | Up to 500°C (Glass Body) |
| Chemical Resistance | Excellent (Acids, Bases, and Solvents) |
| Sterilization | Fully Autoclavable |








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