The Volumetric Flask with Polyethylene Stopper is laboratory glassware intended for precise liquid volume measurement and preparation of solutions with defined concentration in analytical routines. It is manufactured from borosilicate glass 3.3 and features a single volume marking on the neck, providing nominal volumetric accuracy when used at the specified reference temperature. It is commonly used for standard solution preparation, dilutions, and quantitative laboratory procedures. Volumetric accuracy is valid only at the reference temperature.
Characteristics
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Manufactured from borosilicate glass 3.3, suitable for laboratory reagents;
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Narrow neck with single volume marking for precise volume control;
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White ceramic ink marking resistant to routine cleaning;
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Supplied with a polyethylene stopper for mixing and temporary storage;
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Suitable for solution preparation, dilutions, and volumetric standards;
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Geometry designed for procedures requiring nominal volumetric control.
Technical Specifications
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Flask material: borosilicate glass 3.3;
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Stopper material: polyethylene (PE);
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Volume marking: single mark;
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Reference temperature: 20 °C;
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Accuracy: nominal volumetric, without individual certification;
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Autoclavable: yes, up to 121 °C, empty.
Approximate dimensions
| Capacity (mL) |
Height (cm) |
Base diameter (cm) |
Stopper diameter (cm) |
| 10 |
9 |
3 |
3 |
| 25 |
11 |
4 |
3 |
| 50 |
13 |
5 |
3 |
| 100 |
18 |
7 |
3 |
| 200 |
20 |
8 |
3 |
| 250 |
23 |
9 |
3 |
| 500 |
27 |
10 |
3.5 |
| 1000 |
33 |
12 |
4 |
Includes
FAQ
Q: Does this volumetric flask come with calibration certification?
A: No. The flask features a factory-adjusted volume marking suitable for general laboratory routines. For applications requiring certified metrological traceability, a certified volumetric flask should be used.
Q: Can the volumetric flask be heated?
A: Borosilicate glass can withstand controlled heating when used only as a container. However, heating during volumetric measurements is not recommended, as temperature variation affects volumetric accuracy.
Q: Does the stopper provide hermetic sealing?
A: The polyethylene stopper provides adequate sealing for mixing and temporary storage but is not suitable for pressurized processes.
Q: What procedures is this flask best suited for?
A: It is best suited for standard solution preparation, dilutions, and quantitative procedures requiring nominal volumetric control.
Q: Can it be autoclaved?
A: Yes. The flask can be autoclaved up to 121 °C when empty; autoclaving the stopper is not recommended.
Brasil
