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 Aijiren Tech SureSTART Selection Guide to find the right septa and vial for your analysis.
Mar 31, 2022 · There is no PTFE barrier. Because of its low permeability, it’s ideal for gas sampling. 2. Black chlorobutyl . There is no PTFE barrier. Because of its low permeability, it’s ideal for gas sampling. 3. Grey bromobutyl/black PTFE . It has a PTFE barrier to work with a wide range of organic solvents with minimal gas penetration. 4.
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 Aijiren Tech SureSTART Selection Guide to find the right septa and vial for your analysis.
Sep 8, 2022 · Excellent septa choice for volatiles with very low background peaks and low permeability. Also ideal for alcohols and aqueous samples. Good resealing characteristics and resistance to coring.
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 Aijiren Tech SureSTART Selection Guide to find the right septa and vial for your analysis.
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:
All About Vial Crimpers: A Detailed 13mm & 20mm Guide Comprehensive Guide to Syringe Filters: Features, Selection, Price, and Usage HPLC Vial Inserts: Enhancing Precision and Sample Integrity Premium PTFE and Silicone Septa: Reliable Sealing Solutions Wholesale COD-V50 16mm 100mm cod tube for water analysis V945 Cheap 2ml 9mm amber HPLC vials for sale V935 Wholesale 2ml amber HPLC vials from
Septa material: General Chromatography vials 3 Septa material: 20 mm headspace septa 4 Temperature stability chart 4 Seal properties 5 Seal selection (for headspace and sample preparation (20 mm) applications) 6 Septa hardness General chromatography vials (in 8 mm, 9 mm, 11 mm, 12 mm caps) 7 Headspace and storage applications
Holds 13 × 3.5ml Screw Cap Septum Vials; 13 holes/15mm dia. × 34mm deep TS-18804 Reacti-Block Z-1 Holds 9 × 0.1mm Reacti-Vials; 9 holes/12mm dia. × 21mm deep TS-18811 Reacti-Block M-1 Holds 6 × 27.5ml Reacti-Vials; 6 holes/28.5mm dia. × 70mm deep TS-18814 Reacti-Block Q-1 Holds 10 Reacti-Vials; Small Reaction Vials 8 holes 25mm × 46mm
- A setpoint of -2 mm will sample 1.6 mm from the vial bottom - Range is -2 mm to 30 mm • Example uses: - Samples with sediment (although properly filtering the sample is ideal) - Sampling from higher in the sample vial in liquid-liquid extractions - Small volume sampling • Exercise caution when using sample offsets in combination with vial
A vial-in-vial method is used, in which the volatile agent is placed in a small inner vial, and the inner vial is capped with a layer of fabric or film to be tested. The agent permeates from the inner vial into an outer headspace vial. The instrument samples the vapor in the outer vial by sampling it and injecting it into the GC for analysis.
The septum is provided with a thin 0.005” PTFE layer laminated to highly pure silicone, and slit through the center for easier needle penetration and to release the vacuum that forms when a large volume of sample is withdrawn from a vial.
PTFE Blunt, thick needle? Slit/pre- cut liner as penetration aid (HPLC) silicone/ PTFE, slit Critical analysis? Very clean liner required
Oct 26, 2021 · The sample should be as homogenous as possible. Ensure the correct vial septa are used (screw cap blue/white or SPME crimp cap). It is very important not to “over crimp” the vials so that the septa are distorted to protect the injection needle. Do not overtighten the GC septum nut, if the septum is overtightened it will core and leak.
Dec 21, 2021 · ANSWER: The preslit vial cap should be used when a very low sample volume is being injected. Having the preslit septa helps ensure reproducibly in sample draw from the vial. The preslit septa are