250ml Borosilicate Glass Volumetric Flask with Plastic Stopper
The Eisco Labglass 250 mL volumetric flask delivers precision for routine preparation, dilution and storage of laboratory solutions. Its clear borosilicate body and narrow neck allows for controlled filling and reading whilst ensuring smooth handling during measurement.
Manufactured from Borosilicate Glass 3.3, the flask maintains clarity and strength through repeated heating, washing and contact with reagents. Uniform wall thickness provides even heat transfer, while a low temperature gradient supports consistent calibration accuracy during use. Each flask is individually calibrated to contain (TC, In) at 20 °C and marked with a sharp, permanent graduation line for accurate solution preparation. The fitted polyethylene stopper provides a secure, chemical-resistant seal that helps protect contents from contamination or evaporation. Mechanically strong and thermally stable, it performs consistently under regular laboratory and production conditions.
Practical Applications
– Preparation and dilution of analytical and test solutions
– Quality control in cosmetic and personal care laboratories
– Food and beverage formulation and testing
– Life science and industrial analytical work
– Teaching and training in volumetric techniques
Key Features
– 250 mL volumetric flask calibrated to Class A tolerances
– Single sharp graduation mark for precise solution preparation
– Narrow neck supports controlled filling and reading
– Polyethylene stopper provides secure chemical-resistant closure
– Manufactured from Borosilicate Glass 3.3 for lasting thermal and chemical performance
– Uniform walls and low temperature gradient maintain measurement stability
– Hand blown to deliver exceptional precision, accuracy and uniform wall thickness
Quality & Standards
– ISO 1042
– ISO 3585
– ASTM E438 Type I Class A
– USP Type I compliant
Specifications
– Capacity: 250 mL
– Material: Borosilicate Glass 3.3
– Colour: Clear
– Graduated: Single line
– Calibration: Class A (20 °C TC, In)
– Batch Certification: Available for download from the manufacturer’s website
– Socket Size: 14/23
– Stopper: Polyethylene (PE), acid proof and chemical resistant (included)
– Autoclavable: Yes at 121 °C (glass only)
– Dishwasher Safe: Yes, top rack
– Brand: Eisco Labglass
Clear, durable and easy to handle, the Eisco Labglass 250 mL volumetric flask provides precision for everyday solution preparation and laboratory analysis.
