Inert septa for HPLC analysis

High performance liquid chromatography is used for separating and analyzing organics in a mixture. It has an advantage over gas chromatography methods because you can run compounds in water samples with very little sample preparation. HPLC has been used in laboratories for over 30 years. A common environmental laboratory method is the analysis of carbamate pesticides.

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.

PTFE/white silicone septa (p/n 5190–7021) • USP standards obtained from USP Column AdvanceBio MS Spent Media 100 Å, 2.1 × 100 mm (p/n 675775‑901) LC system • Aijiren II bio‑inert quaternary pump (G5654A) • Aijiren II bio‑inert multisampler ( A) • Aijiren II multicolumn

Wide range of bottle septa, vials, caps and seals for sample preparation. Choose from bottle septa by Aijiren Technologies and our home brand Altmann Analytik.

PTFE/Red Rubber septa are the most popular and economical choice for general gas chromatography applications. These septa are used primarily for routine analysis in gas chromatography with FID, TCD and FPD detectors. PTFE/Red Rubber offers moderate resealability and excellent chemical inertness before puncture.

the analysis. Several septa are available with either slits or a starburst pattern pre-cut into them. These cuts provide a secure seal, but allow easy penetration by the autosampler needle. The various types of septa, their properties and incompatibilities are listed in the table below. Septa Use with Avoid Resealability Temperature Limit Barrier

Screw caps with septa 2 mL screw top vials Vial insert (250 µL) ALS syringe, blue, 10 µL, PTFE plunger G4513-80203 Inert septa, Advanced Green Inlet liner O-ring, nonstick 5188-5365 Inert liner, Ultra Inert, split, low pressure drop J&W DB-WAX Ultra Inert, 30 m × 0.25 mm, 0.25 µL column 122

PFAS analysis. The kit was tested with mobile phases common in PFAS analysis applications, including water, methanol, acetonitrile, and mixtures of these as well as with mild additives at relatively low concentrations, such as 20 mM ammonium acetate or 0.1% acetic acid. For users running applications other than PFAS analysis on the same LC

Mar 31, 2022 · You can put septa in the cap of the HPLC Vial to seal the vial. Also, with that action, you guarantee that there is no gap between the cap and the vial in the HPLC analysis. Here is a list without further explanations of the septa types used today: General Chromatography Vials: PTFE/silicone, PTFE Natural Ruber, PTFE synthetic Ruber, PTFE

Aijiren's 2 mL screw top vials are constructed from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching. Our 2 mL glass vials are available in both amber and clear versions. The associated 9 mm vial screw cap comes with your choice of septa constructed from either PTFE/silicone, PTFE/silicone

Vial selection for an HPLC system is an important but often overlooked step. Several characteristics of vials and septa are critical for optimum performance in an HPLC run. The following guide will assist you in making the best selection for your specific analysis. Vial Mouth Opening

Mar 17, 2009 · New PRE-CUT Septa for HPLC Applications. Mar 17 2009. In HPLC often slitted or cross-slitted Silicone/PTFE Septa are used, in order to offer a penetration aid for the fairly thick and dull needles used in the HPLC instruments. While the instrument needle requires the slitted septa, the user may run into the risk of concentration changes due to

make PTFE/silicone septa suitable for all types of chromatographic applications. A thin film of PTFE is laminated to the side of the septum that faces the sample to limit exposure of the elastomer to the solvent. PTFE/Silicone septa are ideal for use in most HPLC and GC applications where resealability and purity are critical.

Our brands offer syringes based on the relevance to the application, instrument compatibility, and personal preference. Choose from standard and high-quality Hamilton, SGE, and VICI ® Precision Sampling analytical gas and liquid syringes. Syringe accessories and specialty syringes designed for unique applications are also available.

Aug 31, 2020 · The second BPA contamination case reports on significant leaching of BPA out of rubber HPLC vial septa. Within eight consecutive injections using the same septum, the BPA concentration in the vial progressively increased from a value of zero at the first injection to 7.8 ng/ml at the eighth injection, while the septa itself contained BPA at