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- made of borosilicate glass 3.3 Duran®
- in compliance with DIN ISO 4800
- very good chemical resistance
- minimal thermal expansion
- high resistance to thermal shocks
- with polystopper standard ground joint 29/32 (100 ml: NS 19/26)
Stopcock with NS PTFE plug, ungraduated:
| Cat. No. | Capacity | Stopcock: Ground joint | Bore | Unit |
|---|---|---|---|---|
| 4400140 | 100 ml | NS 14,5 | 2,5 mm | 2 |
| 4400240 | 250 ml | NS 14,5 | 2,5 mm | 2 |
| 4400340 | 500 ml | NS 18,8 | 4,0 mm | 1 |
| 4400440 | 1000 ml | NS 18,8 | 4,0 mm | 1 |
| 4400540 | 2000 ml | NS 18,8 | 4,0 mm | 1 |
Stopcock with NS PTFE plug, with blue graduation:
| Cat. No. | Capacity | Stopcock: Ground joint | Bore | Unit |
|---|---|---|---|---|
| 4400150 | 100 ml | NS 14,5 | 2,5 mm | 2 |
| 4400250 | 250 ml | NS 14,5 | 2,5 mm | 2 |
| 4400350 | 500 ml | NS 18,8 | 4,0 mm | 1 |
| 4400450 | 1000 ml | NS 18,8 | 4,0 mm | 1 |
| 4400550 | 2000 ml | NS 18,8 | 4,0 mm | 1 |