For stabilizing Erlenmeyer flasks immersed in water
- Easy-to-locate red color
- Vinyl coating protects glassware
- Helps prevent chemical spills
These chemically-resistant vinyl-coated lead rings are designed to stabilize single flasks in water baths and on bench tops. Simply slip the ring over the neck of Erlenmeyer, volumetric and other commonly used straight-necked flasks. The closed ring fits over the flask and seats against the shoulder. Available in four sizes.
| Thomas No. | Weight (lbs.) | i.d. mm | Fits Flasks |
| 9868A35 | 0.5 | 43 | 125-500 mL |
| 9868A37 | 1.0 | 51 | 250-1000 mL |
| 9868A39 | 1.5 | 56 | 500-2000 mL |
| 9868A41 | 2.0 | 71 | 1000-4000 mL |