Product Description
Match the septum to the method on 18 mm screw thread headspace and SPME vials. These blue magnetic caps let autosamplers pick up and move vials magnetically while the polypropylene screw closure seals without a crimper. Caps are sized for 18 mm screw thread vials.
This listing is for MicroLiter catalog number 18-4100: 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Blue PTFE Septa, for SPME, Pack of 100. Septa options include white silicone/blue PTFE for SPME, white silicone/natural PTFE, red butyl/PTFE, blue silicone/white PTFE, white silicone/red PTFE and red rubber/natural PTFE, in thicknesses from about 0.06 to 0.125 in. Packs of 100, 50 and 10 are available. Thicker septa offer more puncture life, while thinner ones ease fiber entry. Order it from LIGHT LABS and keep your lab stocked with genuine DWK Life Sciences products.
Key Features
- Magnetic cap – Supports magnetic vial transfer.
- 18 mm screw thread – Tool-free sealing.
- SPME-ready options – Septa suited to fiber penetration.
- Multiple septa – Silicone, butyl and rubber with PTFE faces.
- Flexible pack sizes – 10, 50 or 100 caps.
Specifications
| Catalog Number | 18-4100 |
| Brand | MicroLiter (DWK Life Sciences) |
| Description | 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Blue PTFE Septa, for SPME |
| Sold As | Pack of 100 |
| Cap Size | 18 mm |
| Cap Material | Polypropylene, magnetic |
| Cap Color | Blue |
| Septa Options | Silicone/PTFE; Butyl/PTFE; Rubber/PTFE |
Available Options
- 18-4101 – 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Natural PTFE Septa, 0.125 in, Pack of 100
- 18-4102 – 18 mm Blue Magnetic Polypropylene Screw Cap, Red Butyl/PTFE Septa, 0.125 in, Pack of 100
- 18-4103 – 18 mm Blue Magnetic Polypropylene Screw Cap, Blue Silicone/White PTFE Septa, 0.07 in, Pack of 100
- 18-4104 – 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Blue PTFE Septa, 0.06 in, Pack of 100
- 18-4105 – 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Red PTFE Septa, 0.075 in, Pack of 100
- 18-4111 – 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Natural PTFE Septa, 0.125 in, 10-Pack, Pack of 10
- 18-4112 – 18 mm Blue Magnetic Polypropylene Screw Cap, Red Butyl/PTFE Septa, 0.125 in, 10-Pack, Pack of 10
- 18-4150 – 18 mm Blue Magnetic Polypropylene Screw Cap, White Silicone/Blue PTFE Septa, for SPME, 50-Pack, Pack of 50
- 18-4156 – 18 mm Blue Magnetic Polypropylene Screw Cap, Red Rubber/Natural PTFE Septa, 0.065 in, 50-Pack, Pack of 50
Applications
- Headspace GC
- SPME analysis
- Volatile organics
- Automated sample handling