These Ossila oval magnetic stir bars carry a virgin PTFE coating and are shaped for stirring small-volume reactions in 2 mL and 4 mL vials and in round-bottom flasks. The oval profile helps the bar follow the curved base of these vessels, so mixing stays efficient even at low volumes.
The PTFE surface resists a broad range of solvents, making the bars a practical choice for routine solution preparation and precise low-volume chemistry. Catalogue code C153-10 refers to the 8 mm diameter, 20 mm long version; the range also includes 3 mm (C152) and 6 mm (C151) diameter bars.
The bars can be reused once properly cleaned. For work where contamination is a concern, a fresh bar or one reserved for a specific critical reaction is the safer option.
- Stirring low-volume reactions in 2 mL and 4 mL vials.
- Mixing solutions in round-bottom flasks.
- Precise stirring of solvent-based mixtures where a chemically resistant PTFE surface is required.
| Brand | Ossila |
|---|---|
| CAS number | — |
| Molecular formula | — |
| Purity | — |
| Category | — |
| Pack sizes | — |
| Physical form | — |
| Storage | — |
- Product code: C153-10
- Product code: C153
- Shape: Oval
- Coating: Virgin PTFE
- Diameter: 8 mm
- Length: 20 mm
- Suitable vessels: 2 mL and 4 mL vials, round-bottom flasks
- Other sizes in range: C152: 3 mm ⌀ x 6 mm; C151: 6 mm ⌀ x 10 mm
- Reusable: Yes, after appropriate cleaning
PTFE is compatible with many solvents, but confirm compatibility with your specific solvent before use. Use a new stir bar for highly sensitive reactions to avoid contamination, and consider dedicating bars to specific critical reactions. Otherwise, clean the bars appropriately before reuse.
—
