| Cat. No. | For flasks ml | Int. Ø mm | PK | |
|---|---|---|---|---|
| 6242742 | 250 ... 1000 | 51 | 1 | |
| 6243010 | 125 ... 500 | 48 | 1 | |
| 6243011 | 500 ... 2000 | 57 | 1 | |
| 7054161 | 1000 ... 4000 | 70 | 1 |
LAB-Rings to stabilise glassware and plasticware on shakers or to immerse in water baths. Vinyl-coated lead rings will not mark or scratch benchtops and labware.