Silicone Septa for Liquid Extraction Applications: Compatibility, Performance, and Benefits

Silicone rubber septa. High quality, silicone rubber laminated to PTFE. Use when excellent resealing qualities are a must. Septum resists coring and is recommended when multiple injections are required. Preferred septa for use in liquid chromatography applications.

Generally, silicone septa are more easily pierced than red rubber or butyl septa. For thicker, hard-to-pierce septa, a small gauge (23 gauge) needle may be required, or a stronger S-needle can be used. Preslit septa are the best option for easy penetration, reducing the likelihood of coring.

PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical. PTFE/Silicone septa are offered in a standard formulation as well as a soft durometer formulation recommended for applications where ease of needle penetration is important PTFE/Silicone/PTFE Septa: (T/S/T)

Jul 11, 2023 · Pre-slit PTFE/Silicone Septa offer several advantages compared to other types of septa. They provide enhanced resealing properties due to the pre-slit design, which helps minimize coring and

the solvent. 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. The septum is provided with a

As a result, replacements are generally being sought for phthalate plasticizers in most applications and not only in applications that have a high risk (i.e., children's toys, food packaging, etc.) The table below shows the primary and secondary performance functions of the main plasticizers that are used in adhesive and sealant formulations.

Bottle Septa. Septa for bottles provide an airtight seal for bottles that prevents environmental contaminants but allows for the removal of the bottle’s contents by piercing with sharp needles. Septa bottle caps are generally available for open-top and screw caps and allow for aseptic syringe dispensing, as well as the addition of materials.

Red silicone septa for use with aluminum seals.Septa are available in a variety of materials and thicknesses. PTFE Natural Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/RR. PTFE/High Performance Rubber is a highly pure synthetic red rubber septum that

Aijiren headspace vials come in two basic sizes (10 mL headspace vials and 20 mL headspace vials). Both flat bottom and round bottom styles are available for use in a wide variety of headspace instrument platforms. Aijiren's headspace vial caps are engineered to prevent sample contamination while providing consistent, secure seals.

Jan 1, 2021 · Solid–liquid extraction (SLE) is the most widely used analytical technique for sample preparation of solids by partition of analytes between the two involved phases, the matrix and the extractant. The SLE process is regulated by three essential mechanisms: the extractant penetration in the solid matrix, the diffusivity of analytes to the

Jun 30, 2015 · Solid-phase microextraction (SPME) is a simple, sensitive, rapid and solvent-free technique for the extraction of analytes from gaseous, liquid and solid samples and takes a leading position among microextraction methods. Application of SPME in sample preparation has been increasing continuously over the last decade. It is most often used as an automatized fiber injection system coupled to

Sep 8, 2022 · Preferred septa for use in liquid chromatography applications. PTFE/silicone: A very pure soft silicone laminated to PTFE. Septum resists coring and is recommended for instruments with fine gauge

Formulations offering highly consistent performance, lowest background/blank value, and good chemical compatibility, effective sealing/resealing and low penetration force make PTFE/silicone septa suitable for all types of chromatographic applications.

Get the performance you need to deliver high quality data with an uninterrupted workflow. Our Performance Level 2 vials have very low metal contents and leachables to ensure that they conform to the high standards you need to meet your regulatory requirements. The septa are conditioned to provide a very low level of chromatographic extractables.

This input helps in developing application-specific PTFE/Silicone Septa with tailored properties, such as temperature resistance, chemical compatibility, and sealing efficiency. Performance Testing: Rigorous performance testing is conducted to assess critical parameters such as pressure resistance, puncture resistance, gas permeability, and