Vial closures with ZeroSept®AIR septum "PTFEvirginal/AIR/PTFEvirginal"
The new septum seal with an air cushion instead of an elastomer for standard vial closures. Due to its innovative design, the ZeroSept®AIR septum PTFEvirginal/AIR/PTFEvirginal has a high tightness, even with multiple injections!
This makes the septum highly pure and, among other things, very interesting for trace analysis. It fits, in combination with our standard bottles, into all common GC/ HPLC systems and can also be moved with your autosampler in the magnetic version.
Vial closures with ZeroSept®AIR septum “PTFEvirginal/AIR/PTFEvirginal“
- Phthalate free closure system
- Made of pure PTFE and without elastomers
- No punching out of elastomer septum particles possible through syringe needle
- Liquid-Liquid Extractions
- Suitable for trace analysis and multiple injections
- very good sealing property
Description GL-18 bottles with tamper evident cap
Leak test of ZeroSept®AIR (PTFE/AIR/PTFE) sealed headspace vials filled with acetone.
Procedure: 20 mL headspace vials were filled with 15 ml acetone and closed with fine thread screw caps containing 4 different septa materials. The sealed vials were pierced with a hypodermic needle (AD0.47 mm) was stored at 23°C. Gross weight (double determination) was measured as a function of time.
|
1A |
1B |
2A |
2B |
3A |
3B |
4A |
4B |
|
|
Time [h] |
PTFE/AIR/PTFE |
Sil white/PTFE blue |
Butyl red / PTFE gray |
Shaped washer dark/PTFE |
||||
|
0 |
29,27 |
29,03 |
28,82 |
28,85 |
29,08 |
29,09 |
29,12 |
29,15 |
|
1,5 |
29,26 |
29,03 |
28,82 |
28,85 |
29,08 |
29,09 |
29,12 |
29,15 |
|
24 |
29,20 |
29,00 |
28,82 |
28,84 |
29,08 |
29,09 |
29,11 |
29,15 |
|
78,5 |
29,11 |
28,94 |
28,80 |
28,82 |
29,08 |
29,08 |
29,08 |
29,11 |
|
102,5 |
29,06 |
28,91 |
28,80 |
28,82 |
29,08 |
29,08 |
29,07 |
29,10 |
|
145,5 |
28,99 |
28,87 |
28,79 |
28,81 |
29,08 |
29,08 |
29,05 |
29,08 |
