Beschreibung
Pre-sealed N 13 screw neck vials 4 mL with black PP screw caps provide a convenient ready-to-use format for laboratory sample preparation and short-term storage. The clear glass vial (702962) features a flat bottom, outer diameter of 14,75 mm and outer height of 45 mm, matching common N 13 screw-thread dimensions. Each bottle is factory-closed with the N 13 polypropylene screw cap (702926) in black, fitted with a centre hole and a silicone white/PTFE red septum. Septum hardness is 40° Shore A and thickness is 1,3 mm, offering a secure closure for everyday analytical tasks. Available in packs of 100 pieces from manufacturer Macherey-Nagel, the pre-screwed assemblies save preparation time and support reproducible sealing at the bench. Clear glass construction enables straightforward inspection of contents, and the screw-thread design allows repeated opening when protocols require access between steps. These pre-sealed units are intended for laboratories that standardise on N 13 screw neck vials and prefer caps with silicone/PTFE septa already installed for immediate use.
Key features
- Pack size: 100 pcs
- Vial: 4 mL N 13 screw neck, clear, flat bottom
- Outer diameter: 14,75 mm
- Outer height: 45 mm
- Cap: N 13 PP screw cap, black, centre hole
- EAN: 4046681136351