| Code | Description |
| GS/010/101 | One-way stopcock NS 12.5 hole 2.5 mm, solid glass key, connections Ø 8 mm thickness 1.5 mm |
| GS/010/102 | One-way stopcock NS 14.5 bore 2.5 mm, solid glass key , Ø 9 mm thickness 1.5 mm connections |
| GS/010/103 | One-way stopcock NS 18.8 bore 4 mm, solid glass key, connections Ø 13 mm thickness 1.5 mm |
| GS/010/104 | One-way stopcock NS 18.8 bore 6mm, solid glass key, connections Ø 13 mm thickness 1.5 mm |
