Vial Septum Cap: Ensuring Secure and Contamination-Free Sample Handling

“dropped” vials due to poor cap alignment. Perfect alignment of the vial and cap surfaces means fewer mishandled vials leading to more completed runs. What does SureStop technology mean for your laboratory? It means confidence that your sample is secure. Analytical consistency will improve, as a result of the elimination

Figure 1 illustrates a complete sample containment solution of the vial, cap, and septum, and their relationship to each other. A needle is shown piercing the cap septum and, as shown in the fi gure, the septum should be the only component that comes into contact with the needle. Autosampler needle Septum Cap Vial Sample location F igure 1.

Jan 27, 2021 · Recommended # of injections per vial cap/septum? bguo23 over 3 years ago. Hi all, I am a novice in the practical aspects of GC (most of my background/knowledge is LC) so I realize this is a very basic question. After determining impurities in my samples were due to vial cap septum bleed, I was hoping to get some feedback on the following topics:

Environmental Express. 1.5mL Polypropylene vial with septum cap for Dionex AS-50 and AS-AP Autosampler. The septum is slit for easy penetration The septum is a laminate of blue PTFE on the bottom and white silcone on the top. Compare this item.

20 mL headspace crimp top vials or screw top vials directly; no effort was made to purge the vials with an inert gas prior to capping. These vial blank samples were used for blank background and potential septa contamination evaluation. Solvent blank samples were prepared by adding 1 mL of solvent blank into a vial and then capping the vial

Test Group 1: Normal Tightening, SureStop Vial/AVCS Closure Sample Evaporation (g) 0.020 0.015 0.010 0.005 0 0.025 Test Group 1: Overtightened, SureStop Vial/AVCS Closure Sample Evaporation (g) Sample Number 04 5 10 15 20 25 30 35 40 5 50 0.020 0.015 0.010 0.005 0 0.025 Effects of Overtightening on Septum Position

Jan 2, 2006 · Figure 3 - Typical mass chromatogram of volatile residue in hexane caused by PTFE/silicone septa: a) hexane extract of a piece of septum; b) vial septum was punctured once by a syringe to sample 1 μL hexane for GC analysis; c) hexane in the last vial was reanalyzed after 3 days; and d) analyzed immediately after 100 μL hexane was added from one vial to another (the septum was punctured 10

The septum you choose for your autosampler vial can impact sample evaporation, sample security, needle bending and blockages, and instrument down time. Don’t let the complexities of septa selection slow you down. Use the simple online Thermo Scientific SureSTART Selection Guide to find the right septa and vial for your analysis.

This magnetic screw cap has been developed for the CTC instrument. The vial has a precision thread with numberous threads to force the septa against the vial to seal it to be gas tight. The center hole is designed to be used for SPME as well as standard Headspace analysis, but still offers enough. Compare this item.

Our Cepure line of vial cap septa offers new septum materials and unique processes to improve septum sealing integrity and reduce the risk of sample contamination. Examples include the NT line of low bleed silicone autosampler vial cap septa, the NR line of natural rubber aluminum crimp cap vial septa, and the BR line of high performing butyl

Dec 11, 2018 · any air bubbles into the samples as vials are filled. Should bubbling occur as a result of violent pouring, the sample should be poured out and the vial refilled. The vials should be completely filled at the time of sampling, so that when the septum cap is fitted and sealed and the vial is inverted, no headspace is visible.

Sep 23, 2019 · These are available in clear and amber glass, screw top, PP cap with PTFE/silicone septa and have a temperature range of -40℃ to 125℃. 40ml VOA vials have high quality polypropylene caps with a 24-400 GPI thread top. As open top closures, they allow for sampling through a septum. For 10/20ml storage vials, it has 18mm thread top caps.

The septum forms a barrier between your sample analyte in the vial and the outside atmosphere. This barrier protects your sample from external contamination while allowing a needle (from a manual or automatic syringe) to enter the vial, and extract the sample for the next stage of separation.

Snap-top Verex™ vials are the easiest way to produce a secure seal. Snap vials accept either crimp or snap seals. Because the snap-top seal is not as secure as a crimp or screw thread seal, snap vials are only recommended for short term shortage and non-volatile samples. 12 x 32 mm, 11 mm Snap-Top Vials and Kits Snap-Top Vials and Seals