24-400 EPA Vials

24-400 EPA Vials
EPA Test Methods 5030 and 5035 are focused on determining the amount volatile organic compounds (VOCs) found in either a solid or aqueous sample.
Examples of these compounds include chlorinated solvents and fuel additives. With both methods, a sample is typically housed in a 40ml EPA VOA vial with an open top cap and septa. The septa used in these EPA vials are typically made of a silicone/PTFE construct, 0.125” thick.
The PTFE acts as the main barrier to minimize contamination during sample handling.
Because of the nature of the method and level of sophistication of equipment, EPA laboratories can measure VOCs to extremely low levels with some measuring ‹ 1 ppb. As a result, it is imperative that the EPA septa not contain any form of contamination.
Through special conditioning and use of cleaner materials, we have been able to consistently deliver clean EPA septa for use in EPA VOA vials. Each production run of EPA septa is tested to ensure compliance to EPA Method 5035 and the test report can be supplied upon request.


Product Feature:
"Ready to use combination seals; no time-consuming and “tricky” assembly No contamination of the liner with sweat/fat that normally is caused by
.manual assembly .Available as closed top screw seals or with centre hole in white 24-400 caps .Broad variety of different septa materials for almost all applications Also UltraBond Seals ND24 are offered, i.e. that the cap and the
Silicone/PTFE liner of these seals form an inseparable unit avoiding the
problem of liners falling out of the cap. This 100% firm fit of the liner is
achieved by a patented process that requires no adhesives, but instead
.changes the molecular structure of both components to achieve the fixation Also pre-sealed vials are available!"
 
ND24 (EPA)  Screw Neck Vials, PP Caps and Septa for Storage Purposes      100pcs/pack
S221-Ⅰ nature PTFE/nature Silicone septa 22*3mm   temperature resistant  -60℃-200℃
S221-Ⅱ nature PTFE/nature Silicone septa 22*1.5mm  temperature resistant  -60℃-200℃
C221 white screw polypropylene cap, 15mm centre hole                        Φ22mm   
C222 white screw polypropylene cap, closed-top                                   Φ22mm          
C223 black screw polypropylene cap, 15mm centre hole                        Φ22mm      
C224 black screw polypropylene cap, closed-top                                   Φ22mm          
SC221221 nature PTFE/nature Silicone septa 22*3mm, 22mm white screw cap, 15mm centre hole  
SC221222 nature PTFE/nature Silicone septa 22*1.5mm, 22mm white screw cap, closed-top 
SC221223 nature PTFE/nature Silicone septa 22*3mm, 22mm black screw cap, 15mm centre hole 
SC221224 nature PTFE/nature Silicone septa 22*1.5mm, 22mm black screw cap, closed-top  
V2017 20ml screw-thread storage vial, clear                                                   27.5*57mm      
V2027 20ml screw-thread storage vial, amber                                                 27.5*57mm        
V3017 30ml screw-thread storage vial, clear                                                  27.5*75mm            
V3027 30ml screw-thread storage vial, amber                                                 27.5*75mm          
V4017 40ml screw-thread storage vial, clear                                                  27.5*95mm          
V4027 40ml screw-thread storage vial, amber                                                 27.5*95mm          
V6017 60ml screw-thread storage vial, clear                                                   27.5*140mm        
V6027 60ml screw-thread storage vial, amber                                                  27.5*140mm     

Product advantage:
1, ISO certificated company system keeps all the process under control ;
2, 4 years OEM experience promise all the orders can be handled very well ;
3, 1 year warranty for the products we supplied, guarantee the stable quality ;
4, All the products are CE certificated ,also SGS test report if need ;
5,24*365 hours sales &technical service will solve the issue in 2 hours ;
6, 5million stock gurrantee 24hours delivery time for all the regular orders ;
7,More than 2000kinds of lab consumables offering you with the best price;
8, Free samples for your test under our cost anytime;
9,No MOQ for users or dealers,different package meets your requirements .