Product Description
Accurate standards and reagents start with a flask you can trust to hold exactly the volume on the line. These Class A volumetric flasks give analysts a crisp, uniform fill mark and a tight-fitting glass stopper, so solutions can be made up precisely and mixed by inversion without leaks.
This listing is for catalog number 2306A-500: Volumetric Flask, Class A, Glass Stopper, 500 mL, Pack of 2. Bodies are machine-blown from borosilicate glass with a low coefficient of expansion, and heavy-beaded necks are tooled to accept standard taper stoppers. Each flask is calibrated to contain at 20°C and has a large marking area for labels. Sizes range from 5 mL to 2000 mL, and a variety kit with one each of 10, 25, 50 and 100 mL flasks is also offered. Add it to your LIGHT LABS order and keep your lab stocked.
Key Features
- Class A accuracy – Made to ASTM E288 Class A and USP glassware requirements.
- Standard taper glass stopper – Seals tightly for leak-free mixing and storage.
- Sharp fill line – A uniform, well-defined graduation line makes meniscus reading easier.
- Borosilicate construction – Clear, chemically resistant glass with low thermal expansion.
- Large marking square – Space for writing sample IDs or concentrations.
- Wide size range – Capacities from 5 mL to 2000 mL plus a four-flask variety kit.
Specifications
| Catalog Number | 2306A-500 |
| Brand | Heathrow Scientific |
| Description | Volumetric Flask, Class A, Glass Stopper, 500 mL |
| Color | Clear |
| Sold As | Pack of 2 |
| Material | Borosilicate glass |
| Class | Class A, ASTM E288; meets USP |
| Calibration | To contain (TC) at 20°C (68°F) |
| Closure | Standard taper glass stopper |
| Capacity range | 5 mL to 2000 mL |
| Tolerance | ±0.02 mL (5 mL) to ±0.5 mL (2000 mL) |
Available Options
- 202GK-004 – Flasks, Variety Kit, 1 Each 10, 25, 50, 100 mL, Pack of 4
- 2306A-10 – Volumetric Flask, Class A, Glass Stopper, 10 mL, Pack of 6
- 2306A-100 – Volumetric Flask, Class A, Glass Stopper, 100 mL, Pack of 4
- 2306A-1000 – Volumetric Flask, Class A, Glass Stopper, 1000 mL, Pack of 2
- 2306A-200 – Volumetric Flask, Class A, Glass Stopper, 200 mL, Pack of 4
- 2306A-2000 – Volumetric Flask, Class A, Glass Stopper, 2000 mL, Pack of 2
- 2306A-25 – Volumetric Flask, Class A, Glass Stopper, 25 mL, Pack of 6
- 2306A-250 – Volumetric Flask, Class A, Glass Stopper, 250 mL, Pack of 4
- 2306A-5 – Volumetric Flask, Class A, Glass Stopper, 5 mL, Pack of 6
- 2306A-50 – Volumetric Flask, Class A, Glass Stopper, 50 mL, Pack of 4
Applications
- Preparing analytical standards
- Making up reagent solutions
- Dilutions for titration and spectroscopy
- QC and pharmaceutical testing
- Chemistry teaching labs
