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.
Preferred Inlet Septa Use Bleed and Temperature Optimized (BTO) septa for inlet temperatures up to 400°C Use Advanced Green septa for inlet temperature up to 350°C The dimpled CenterGuide on Aijiren septa greatly reduces coring related leak problems 1 Injection 100 Injections 700 Injections Liners - 3 Key Variables
Jul 26, 2016 · All solvents have different expansion coefficients and the analyst must determine an appropriate liner volume based on their solvent, injection volume, inlet temperature and pressure. There are free calculators available online for calculating the expansion volume of various solvents at a given temperature, injection volume and column head
Jun 13, 2022 · GC solvent vapor volume The volume of sample introduced into a heated liner increases greatly during vaporization. How much it . expands is determined by the solvent, the inlet temperature, and the pressure inside the liner. See table. Your liner volume needs to be large enough to accommodate the gaseous sample. If the diameter is too
Septa can be made from a range of materials including PTFE, silicone, red rubber, luoroelastomers, and butyl to name. few. The materials are layered together in one of three options: Choose a material that is as inert as possible to your sample analyte and makeup solvents.
Nov 5, 2018 · A: Evaporation of both solvent and analytes can occur over time, even with re-sealing septa like PTFE/Silicon. It is very much dependent on the chemistry of the analytes, the diluent, and the
allows for smoother penetration of vial and injector septa. SPME fiber advantages: – Original proven design – Solvent-free – Easy to automate – Nondestructive to samples – Fibers are reusable – Compatible with GC or HPLC instrumentation All Aijiren SPME fibers have a standard length of 10 mm and a 23-gauge needle.
GC Syringe selection Guide. This document is believed to be accurate and up-to-date. However, Aijiren Technologies, Inc. cannot assume responsibility for the use of this material. The information contained herein is intended for use by informed individuals who can and must determine its fitness for their purpose.
Headspace Sampling for GC – The Basics. Headspace sampling is a type of sample introduction technique for gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). For headspace techniques, the gas layer, or the headspace above the sample in a vial, is analyzed as opposed to withdrawing a volume from within the sample layer
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.
Jul 1, 2016 · Choosing the wrong septa can compromise method accuracy and repeatability as well as reduce column life in extreme cases. This installment addresses septa for inlets and sample vials. In gas chromatography (GC), septa form part of the critical juncture between internal passages and the external ambient atmosphere with its oxygen and water.
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.
Polyethylene septa are not resealable and intended for single injection use. Polypropylene (PP) Septa: Chemically resistant polypropylene septa are available as 0.01” thick disks inserted into aluminum crimp seals. The surface for needle penetration is 0.01” thick allowing for use with thin gauge needles. Polypropylene septa are not
A specially moulded seal with a PTFE insert. Sealing surface of Butyl and PTFE affects a more positive seal than non-PTFE-faced septa. Ideal choice for temperatures below 125°C. Good sealing characteristics, excellent resistance to most solvents with reduced coring and high puncture tolerance.
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.