Vial with Septum: A Comprehensive Guide to Sample Storage and Analysis

The polystyrene pellets were freeze-ground before analysis by the MHE procedure. The optimization of headspace temperature and time for sample equilibration are discussed in detail. The repeatability was generally better than 2% RSD for each analyte in the same sample batch and the reproducibility was better than 5.6% RSD for different sample

Clear vial, 2 ml, 12 x 32 mm with write-on spot 5181-2069 Amber vial, 2 ml, 12 x 32 mm with write-on spot Part No. Description (Vial Kits 500/Pack) 5182-0547 Clear vials, 2 ml, 12 x 32 mm clear polypropylene snap caps, PTFE/red rubber septa 5182-0548 Amber vials, 2 ml, 12 x 32 mm with write-on spot, clear polypropylene snap

Jul 31, 2020 · Needle Gauge: A bigger needle gauge can need more force to get through non-pre-slit septa, which could cause damage to the septa or sample contamination. A pre-slit septum might be the best choice in this situation. Injection Frequency: A pre-slit septa may be more appropriate for applications requiring repeated injections since it can lessen

Sep 22, 2021 · The sample was placed in a 40-mL screw-cap vial with a PTFE septum and heated on a hot plate at 50 °C. The SPME needle was passed through the septum of the vial, and the fiber was exposed in the headspace (HS) above sample for 45 min to adsorb the compounds vaporized by heating.

Catalog number: TS-13019. For a convenient, versatile, and cost-effective vial and closure system, choose Thermo Scientific™ Screw Cap Septum Vials. Made of autoclavable borosilicate glass and available with a wide assortment of special closures and accessories, these vials are ideal for sample collection and small derivatization reactions

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

Mar 31, 2022 · Choose the fitting cap and septum. For lesser sample sizes, consider using an insert. Decide on the material for the vial. Decide on the best technique of storage. So, as you may have gathered, selecting the correct vial for HPLC is not always a straightforward task however, I hope these recommendations serve as a good starting point.

forms when a large volume of sample is withdrawn from a vial. This septum provides chromatographic characteristics similar to that of a septum without a slit, except that the ability to withstand exposure to aggressive solvents is slightly lessened. Pre-slit septa are highly recommended for autosamplers with thin gauge needles or higher

Use the simple online Thermo Scientific SureSTART Selection Guideto find the right septa and vial for your analysis. Thermo Scientific SureSTART Selection Guide. Answer a few simple questions and our SureSTART Selection Guide will recommend the best septa, cap, and vial for your workflow.

samples during long term storage. The protective top provides additional support and prevents accidental puncture of the septum and resulting sample loss. Ergonomic innovation is the key to this product, ensuring that comfort and ease of use have not been overlooked. We also understand that samples may be stored at very

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.

Vial Selection 8 Aijiren Vials and Sample Containment Solutions Manufacturer Model Crimp Snap Screw Headspace VOA Vial Septum Seat Diameter (mm) 11 11 8 9 10 13 23 23 23 23 28 Vial Size (mL) 2 2 2 2 2 4 10 20 10 & 20 10 & 20 20 & 40 Vial Thread Style 8-425 9-425 10-425 13-425 24-400 Bottom (FB – Flat Bottom, RB – Round Bottom)

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.

Septum Selection Guide Screw Top Vials, Caps, Septa and Kits Combine the excellent autosampler handling of a crimp cap profile with the ease of a screw cap. The screw caps and precision fit septa give a secure seal with microvolume inserts. 2 mL, 12 x 32 mm 40% larger opening than standard narrow opening vials

analyzing volatile organic compounds. A headspace sample is normally prepared in a vial containing the sample, the dilution solvent, a matrix modifier, and the headspace (see Figure 1). Volatile components from complex sample mixtures can be extracted from non-volatile sample components and isolated in the headspace or vapor portion of a sample