septa suit for cap

Aijiren’s 8mm Septa is made of Silicone and PTFE raw materials. Aijiren cuts Pre-slit on Septa for the convenience of customers. The pattern is a font and a cross. The cross-shaped pre-slit septa is the best. It is convenient for the automatic injection needle to puncture. If the customer uses a blunt needle, you can consider buying a cross-type pre-slit septa.

24mm Silicone/PTFE Septa is matched with 24mm screw neck cap, suitable for 24mm screw sample storage vial. Aijiren has an exclusive production technology that can compound PTFE and Silicone without adding any adhesives, so Aijiren’s Septa is soft and not easily deformed.

As a factory specializing in the production of chromatographic consumables, Aijiren has hundreds of workers for production, especially Septa. Aijiren has exclusive septa composite technology, so the requirements for the workers in the septa workshop are very high. The workers in the picture are using cutting machines for Silicone and PTFE composite material for cutting work.

The Silicone/PTFE Septa produced by Aijiren uses high-quality raw materials and an exclusive compounding process. This process does not require any adhesives to compound Septa and Silicone to achieve no cracking, no falling off, and a perfect fit for autosampler vial and antosampler.

13mm Screw Neck Closures are made of high-quality polypropylene. The thread shape inside the Cap can fit the automatic sample injection via very well, and it is also compatible with the automatic sampler. The 13mm Screw Neck Closures pre-assembled septum can reduce the chance of contamination during sample preparation and save time in laboratory sample preparation. Aijiren provides septa and slit septa. The normal available cap color is black, but other special colors can also be produced.

PTFE/silicone septa are most commonly used in HPLC applications, and pre-cut septa are easier to pierce with a needle. The cap color is generally black, but other special colors can also be produced accordingly. Easy to apply and easy to remove. Pre-installed caps and septa are very convenient. Aijiren 13mm Screw Closures are commonly used in 4ml Screw Top HPLC Vial. Aijiren can recommend the most suitable Closures for your HPLC Vial.

20mm PTFE Septa can overcome the degradation that occurs due to long-term high temperature, because it is very common in silicone rubber septa. Degradation causes baseline drift and extra peaks. Therefore, the 20mm PTFE Septa produced by Aijiren is usually fixed with the PTFE side facing the column packing. For most GC/MS and other high-sensitivity detectors, Aijiren recommends septa materials with the PTFE logo; these are the cleanest and highest performing products. The PTFE septum contains very low levels of contaminants, which minimizes interference with the analysis and guarantees excellent results on all major LC/MS and GC/MS instruments.

The PTFE layer of Aijiren’s 20mm PTFE Septa composite diaphragm is in contact with the reagent. It is chemically inert, resistant to acids, alkalis, temperature and adhesion. Even at high temperatures, it cannot work with concentrated acids, alkalis or strong oxidants. At the same time, the elasticity of the silicone rubber or silicone layer can ensure the sealing performance; Aijiren abides by strict production management to ensure the quality of the product. The product is clean and can be used directly without washing.

PTFE is the most inert, but it has poor resealability, so it is not suitable for multiple injections or storage. For layered septa (such as PTFE/silicone), the chemical resistance of the septum is PTFE until the septum is punctured.