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

Septa selection guide Overview Diferent septa material for LC and GC applications There are many diferent types of materials used to produce the septa found in LC and GC vial caps. This document will provide you with the technical guidance you need in order to make the right selection. Choosing the right septa

PTFE/Silicone septa are ideal for use in most HPLC and GC applications where resealability and purity are critical. Pre-slit PTFE/Silicone Septa Pre-slit septa are offered in many of the same formulations as for non-slit PTFE/silicone septa and shares most of the physical and chemical characteristics.

High Temperature GC Septa. High Temperature Septa is made of preconditioned PTFE/silicone rubber and is 3.175 mm (0.125 in) thick. The average life of these septa is up to 100 injections with a 26s gauge needle. The maximum operating temperature is 212° C.

Trust our low-level certified vials for Total Organic Carbon testing and sampling. Manufactured, tested and packaged by exacting standards,Aijiren Tech™ TOC Certified Containers are certified to contribute <10ppb or < 20ppb TOC as background. Product Overview. Recommendations. Documents.

The associated caps are lined with PTFE or PTFE/silicone to restrict impurity contamination. Aijiren storage vial kits offer a high level of chemical resistance. 40 mL vials are popular sample storage vials. 40 mL amber glass vials are most often used in the environmental market segment for onsite sample collection. 4 mL vials are the smallest

Mar 31, 2022 · PTFE/silicone septa. PTFE/Silicone is an ideal choice for analyzing volatile organic chemicals. These analyses happen at low concentrations or during operation at higher conditioning temperatures. Store PTFE/Silicone septa in a glass Purepak jar to ensure: 1. minimal background, 2. low permeability, 3. and the best performance of any headspace

As the demand for trace analysis increases, and the number of laboratory problems caused by GC septa, choosing high-quality GC Septa becomes even more important. Choosing the right injection port septum for your GC is not as simple as picking up any supplier’s catalog, looking at the temperature range stated for the septum, and assuming that

Jun 9, 2022 · Bleed from GC inlet septa was collected by submerging approximately 5 g of septa in 5 mL of methylene chloride for 6 h. Both septum and column bleed were concentrated 10-fold by evaporation at 60 °C. Samples were analyzed individually and combined for a single analysis to evaluate bleed profiles (Figure 1).

Sample Vial Caps&Septa. Red PTFE/White silicone septa + Aluminium cap with hole, for 2ml crimp top vial. 100 (pcs) $16.00. + -. LBSV140CSS. Sample Vial Caps&Septa. Nature PTFE/Nature silicone septa + Black screw cap with hole, for 20ml/30ml/40ml/60ml 24-400 screw top vial.

Oct 21, 2022 · Oct. 21st, 2022. The septa and vial caps are essential parts of HPLC vials. The vial cap serves as a barrier, keeping outside contaminants out of the vial and preserving the integrity of the sample. The septa, a seal between the injection needle and the vial composed of silicone, PTFE, or rubber, ensure accurate and exact sample injection.

Accessory Product Data Sheet Septum Selection Guide 411 Madrid Avenue Torrance, CA 90501 Tel: 310-212-0555 Fax: 310-328-7768 www.phenomenex.com

PTFE/Silicone Septa: (T/S) High quality, pure silicone is laminated to 0.005” thick PTFE to give a pure, highly inert septum with excellent resealing characteristics even after repeated punctures. PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical.

Analytical Vials. Vials play a significant role in analytical analysis and result reproducibility. Vials must be inert and free of extractables or leachables to prevent affecting results. Using certified, application-specific, contaminant-free vials can significantly reduce risk. We offer a broad spectrum of Supelco ® products including

Closure contains ultra-low-bleed silicone septa for ultra trace analysis Products are shrink wrapped in order to assure originality, purity and transport safety. Download White Paper: MS Certified Vials: Pre-cleaned and certified vials for mass spectrometry