GC septa

Polypropylene screw cap with septum – Polypropylene screw cap with precision fit septum provides anti-evaporation seal. Two layers include silicone and PTFE. Silicone septum for multiple injections. PTFE lining screw cap for organic samples. The screw cap provides an inert airtight seal and holes directly into the sample with a needle.

Polypropylene Screw Cap with Septa – Polypropylene screw cap with precision-fit septa provide an evaporation-proof seal. Bi-layer include silicone and PTFE. Silicone septa for multiple injections. PTFE-lined screw cap for organic samples. Screw caps provide an inert, airtight seal and direct puncture-access to samples with a syringe needle.

The 9mm sample vial has a shortcoming. Because of the short thread and thin gasket, it is easy to pierce and also increases the risk. If it is a pure blunt needle injection, the gasket will penetrate the bottom of the vial, so it is recommended to use a pre-cut or Bonded gaskets and reduce the number of repeated needle insertions to reduce risks.

The screw caps produced by Aijiren can have an opening for the autosampler and standard additions, or they can have a solid top for storing samples. A polypropylene cap and film are also available. These pierceable screw caps are designed for one-time use, and because there are no caps and seals to assemble, the sample preparation time is reduced.

Bottles and screw caps can be autoclaved / sterilized. Made from borosilicate glass helps prevent changes in ph levels and maintain content purity. Non-slip coating allows for greater ease and stability when handling wet or dry. 45mm white polypropylene unlined screw cap comes attached to bottle to help maintain cleanliness. Pvc-based plastisol coats exterior of bottle retaining contents if bottle is accidentally broken.

Aijiren focus on improving the safety and integrity of our samples. Aijiren provide innovative 9mm thread caps and 9mm 2ml Hplc Screw Vials to ensure consistent productivity in all separation processes. These vials are the best choice for the latest autosampler. Standard open screw vials are made of borosilicate glass with a maximum filling volume of 2ml.

The Aijiren 15x45mm vials have a 13-425 GPI thread and can hold up to 4ml of sample. Use the 13 x 425 caps with septa for use as sample vials and with diffusion caps for wash vials. With closed top screw seals, these vials can also be used as storage vials.

18mm Magnetic Metal Cap with Center Hole for more convenient for the automatic injection needle to perform sample injection.Generally speaking, the Septa in the 18mm Closures uses a double-sided compound of Silicone and PTFE Septa, which makes it difficult for Septa to react with reagents, and it can also protect impurities in the air from falling into the vial.

Clear Glass Screw Thread Vials are 2mL, 12x32mm and built with Advanced Vial Closure System (AVCS). This innovation not only prevents septa push through, but provides a stop point for the cap to prevent over- or under-tightening and provide an optimal, consistent seal every time.

EPA sample bottles are used to store EPA reagents, enzymes and other diagnostic reagents, and biochemical reagents or samples. The screw is sealed to prevent leakage and can be used at low temperatures. Amber Storagr vials can be used for light-sensitive samples.

Suitable for colorimeters and test kits on the market
Also suitable for instruments and test kits
Easy-to-open sealed vials eliminate the risk of cross-contamination
Extend the shelf life to five years
Used for municipal wastewater testing; industrial wastewater and process control testing; environmental water testing

18mm Screw Top Headspace Vial optional capacity is 10ml 20ml, the specifications are: 22.5*46mm, 22.5*75.5mm, providing headspace vials in both colorless and brown colors. The 20ml GC analysis headspace vials series strictly controls the HPLC vials mouth to improve the sealing performance. The precision molding bottleneck improves the processing capacity of the autosampler.

Choose 9mm hplc sample vials: use micro-injection and high-recovery sample vials to obtain the maximum sample extraction volume without inserting them separately, and identify samples and samples through the graduated and stickable patches provided on some sample vials. Volume, obtain maximum polarity, unstable or easily recyclable samples, use silanized (inactivated) glass OH interaction compound (optional)

With the use of headspace vials, the whole experiment can be prepared for analysis in an efficient and accurate way. The essence of this experiment is that the volatile sample is heated and vaporized to form a gas in the top space of the headspace vial and then diffuses. Finally, the gas in the vial enters the gas phase detection.