Pre-Slit Blue PTFE/White Silicone Septa + Blue Screw Caps | Fits 2mL 9-425 Screw Top Vials | Leak-Proof, Lab-Grade for HPLC & GC Analysis,100pcs/bag
Advanced Features:
✅ Premium PTFE/Silicone Material – High chemical resistance, ensuring no contamination or degradation.
✅ Pre-Slit for Easy Needle Penetration – Reduces risk of coring, making it ideal for HPLC and GC applications.
✅ Leak-Proof & Secure Fit – The 9-425 blue screw cap with hole ensures a tight seal, preventing evaporation.
✅ Perfect Compatibility – Designed to fit 2mL 9-425 screw top vials, widely used in chromatography labs.
✅ Durable & Reusable – Resistant to high temperatures, solvents, and repeated punctures.
✅ Bulk Pack for Labs & Research – Includes 100x Pre-Slit PTFE/Silicone Septa + 100x Blue Screw Caps.
Technical Specification:
| Specification |
Details |
| Thickness |
1.0±0.15 |
| Hardness |
45°±5° |
| Diameter |
9.0±0.2 |
| Cap Height |
6.2±0.2 |
| Cap Diameter |
11.8±0.2 |
| Septum Cleanliness |
Cleanliness Test(GC Head Space Test) |
| HPLC Extractables Text |
No detectable peaks |
| Silicone Colour |
White |
| Membrane Colour |
Blue |
| Cap Colour |
Blue |
| Top/cap Type |
9-425 Screw top |
| Cap/Septum Sealing |
Sealing Test |
|
Heavy meatls and
Arsenic release
|
Content of Heavy metals and Arsenic is considerably
below the limit values of European Ph. and China Ph.
|

Package Options:
1. 100pcs Pre-Slit Septa Caps
2. 200pcs Pre-Slit Septa Caps
3. 500pcs Pre-Slit Septa Caps
4. 1000pcs Pre-Slit Septa Caps