18mm Screw Neck Closures

Aijiren has produced 24mm Screw Neck Closures for more than 20 years. From Cap processing to Septa production, all are produced by fully automated machinery. Aijiren promises to use dust-free workshops to produce Screw Closures to ensure the cleanliness and high quality of the products.

Aijiren’s septa for 24mm screw closures uses natural-color Silicone and PTFE. These Septas have a diameter of 22mm and a thickness of 3mm, which are consistent with the size of the Cap and can be placed between the Vial and the Cap to isolate the air and the sample. The size is 3mm. The thickness is also very suitable for needle piercing. The material of Septa is soft and tough, not easily deformed and will not break.

The compatibility or chemical resistance of 20mm Grey Butyl Septa with samples and solvents can be consulted by Aijiren’s salesperson. Butyl’s tightness makes 20mm Grey Butyl Septa suitable for multiple injections or storage. The 20mm Grey Butyl Septa has a thickness of 3mm, which has good sealing properties and facilitates the puncture of the autosampler needle. It is not thick enough to affect the puncture. PTFE is the most inert resistance of the septum, and Aijiren’s bonding process makes Septa not easy to fall off.

The blue high-quality PP bottle cap of 9mm Screw Neck Closures will be combined with Septa. Aijiren has a unique patented method to combine Silicone and PTFE. Septa produced by this patented method is combined with a chemically inert Cap to avoid excessive evaporation and keep the sample bottle well sealed. It is recommended for short-term storage or liquid chromatography. Aijiren produces a variety of colors of 9mm Screw Neck Closures to choose from to meet different needs.

There are two types of packaging for 20mm Crimp Top Closures produced by Aijiren, one is packaged in plastic bags, the other is packaged in threaded plastic cans, and the quantity is 100 per bag/can. Aijiren is packaged in cans. Because 20mm Crimp Top Closures are easily squeezed and deformed during transportation, which affects the sealing effect in the experiment, they are packed in cans.

Aijiren’s popular product, Headspace Vial, has two types: Screw Neck and Crimp Neck. The worker in the picture is packing the headspace Vial after it has been produced. After labeling the product, an outer packaging is required. This is multi-layered packaging. It can absorb shock to prevent Headspace Vial from being damaged due to bumps during transportation.

The screw closures produced by Aijiren are used for 9mm screw vial. 9mm screw vial is the most commonly used autosampler vial. Because of the 9mm opening and 12*36mm bottle body, it is compatible with most types of autosamplers and the convenience of screw closures It has also become the reason why screw vial sells well.

Aijiren recommends that each syringe filter be used only about 10 times. If there are too many impurities in the reagent, the pore size of the syringe filter will be blocked and the filtration task cannot be completed. The Syringe filter provided by Aijiren has a favorable price and good quality. It is very suitable to change to a new Syringe filter to continue filtering after using it several times.

How to choose a precise syringe filter: Aijiren disposable syringe filters come in many types. There are mainly two series, one is hydrophilic and the other is hydrophobic series. The syringe filter has two diameters: 13mm and 25mm. The pore size of the filter membrane is 0.22, 0.45um. Membrane materials include: RC, nylon, PVDF, PTFE, etc. It is important for customers to choose the right membrane.

Aijiren 18mm magnetic screw cap (silver) and silicone/PTFE septa. Cap: The magnetic 18 mm screw cap can be effectively tested on the gas chromatograph autosampler, and the standard aperture of the center hole ensures the effective injection of the autosampler. Septa uses inert PTFE and Silicone bonding, or PTFE and Butyl bonding, these can be provided to customers to choose.

Aijiren is a professional supplier of chromatography consumables. Aijiren not only provides 20mm Crimp Top Closures, but also provides matching Headspace Vial, Hand Crimper and Decrimper. The 20mm Crimp Top Closures has a strong sealing performance, and the combination of rubber and PTFE makes Closures have better sealing performance and is very convenient for automatic injection needle puncture. Aijiren has 20 years of experience in producing gas chromatography consumables. The high-quality products and strict review system have made Aijiren successful until now.

The COD Test Tube produced by Aijiren is often used for water quality analysis, environmental monitoring, oxygen demand detection and other chemical experiments. This requires high raw materials for the production of COD Test Tube, and requires stable and inert glass for production. The technical requirements for manufacturers are relatively high. As a factory with decades of production experience, Aijiren can easily handle this task.

The standard sample vials for GC and HPLC have a 9mm opening to facilitate sample storage. It can be used with 9mm Closures. There are different colors of open cover, solid cover and a variety of septa suitable for different applications for customers to choose. Aijiren produces Closures in a clean room. It is Aijiren’s efforts to ensure the high quality of 9mm Closures and 9mm hplc vial.

Aijiren has been engaged in the production of chromatographic consumables for 20 years. The types of products produced by Aijiren include Autosampler Vial, Syringe Filter, COD Test Tube, Headspace Vial, Reagent Bottle, etc. These products need to be packaged and shipped after Aijiren is produced. This uses the packaging workshop in the picture.

Aijiren finds the right size filter in order to ensure that customers can filter the particles correctly. It is recommended that you choose the diameter of the filter carefully. Aijiren produces usually sizes of 13 mm and 25 mm. Each of them has a different ability to hold particles. According to the sample size, the appropriate filter diameter can be selected. For example, a diameter of 13 mm can be used for samples of 1-10 ml. Similarly, 25 mm PVDF syringe filters can be used for sample volumes of 10-100 ml. Their retention is less than 100 ml.

18mm Screw Neck Closures 18mm screw neck vials with magnetic screw seals for CTC is a new product in the headspace market where the jaws dominate. Especially for magnetic caps that are difficult to crimp, screw caps are a convenient alternative. 18mm Screw Neck Closures with Vial are preferentially used in instruments: CTC PAL, Varian, Gerstel, Atas, Shimadzu, Aijiren.

Aijiren’s Septa made of high-quality raw materials can protect the seal inside the Vial to a certain extent, and will not break or fall off the cap after the automatic injection needle is punctured. This is to a large extent. Gas chromatography experiments provide convenience, and bring safe and accurate results.

During Aijiren’s production process, more production is used as a backup. Autosampler Vial with part of the margin is packaged in a carton for packaging. Aijiren’s factory can provide Autosampler Vial, Headspace Vial, COD Test Tube, Syirnge Filter and other different products. Production, so Aijiren has great advantages in exporting products. These advantages have created Aijiren and made Aijiren a well-known supplier of chromatography consumables in China.

Nylon Syringe Filter material: high-density polypropylene PP for exterior wall; filter membrane: nylon. Filter area: §¶13mm-0.65cm2, §¶25mm-3.9cm2. Inlet pressure: §¶13mm-7bar, §¶25mm-5bar [1 bar (bar) = 100,000 Pa (Pa) = 10 Newton/square centimeter as the pressure unit] Temperature: 60-130 degrees Celsius. Features: Significantly hydrophilic, no need for pre-wetting. The pore size is uniform, and it has strong elasticity and adsorption force, which can ensure effective retention and meet the application requirements of fine filtration. It has good chemical compatibility, is compatible with most reagents, and does not shed fibers. It meets the standards of the pharmaceutical industry.

11mm Snap Closures are an extension of the crimp cap sealing system. Stretch the plastic cover on the edge of the 11mm Snap Vial, and form a seal by squeezing the Septa between the glass and the PP Cap. The advantage of the plastic snap cap is that it can be assembled without tools. 11mm Snap Closures is a simple sealing system. If 11mm Snap Closures have a very tight fit, they are difficult to apply and may crack. If the fit is too loose and the seal is not good, Septa may fall off.

In order to produce 9mm closures, Aijiren purchased brand new automatic production equipment, such as septa production machines and Cap production machines, and Aijiren can also automate the assembly of Cap and Septa, and realize the pre-cutting machines for Septa, all of which are available in the Aijiren factory of.

The septa produced by Aijiren uses high-quality raw materials. The raw materials are softened and heated into a mold into a shape with the same size and size. Then, a unique process is used to combine Silicone and PTFE, and finally cut and cut into a size suitable for Vial. . Aijiren, as a rubber factory, has enough experience and strength for Septa’s quality assurance.

Aijiren’s 20mm headspace vial is a popular product of Aijiren, and its corresponding Aluminum Cap with PTFE/Silicone Septa is also a popular product of Aijiren. It is precisely because of Aijiren’s excellent quality and favorable price that Aijiren has become the most well-known chromatography in China. One of the manufacturers of consumables.

Aijiren’s syringe filter with nylon membrane is compatible with a variety of solvents and is very suitable for rapid filtration of most aqueous and organic solutions. Therefore, when the mixture of the sample aqueous solution and the organic solvent passes through the membrane, the fine droplets of the extraction solvent gather and separate from the sample aqueous solution. The nilong syringe filter produced by Aijiren is environmentally friendly and has no centrifugal effect. By filtering the receptor phase, it can provide a higher sample purification rate.

Aijiren syringe filter features: The syringe filter housing is made of high-quality sanitary polypropylene material (PP). The precise structure ensures smooth filtration, reasonable internal space, and extremely low residual rate. Can withstand pressure up to 7bar. The needle filter has a thread on the edge and has a non-slip function, which is very popular among users. Our membrane comes from a well-known filtration membrane company in China, which guarantees the stable quality and high precision of the membrane pores, and provides maximum protection for your instrument and gas chromatography column. The quality of the filter membrane is stable, and there is no difference between each product, ensuring the consistency of your test results.

Aijiren’s PTFE syringe filter housing is made of high-quality polypropylene (PP) with high mechanical strength and good chemical compatibility. The filter membrane is made of hydrophobic polytetrafluoroethylene (PTFE). No binders or additives are used, and there is little interference with the analysis. Teflon syringe filters are widely used in laboratories. It does not require membrane replacement and filter cleaning, eliminating complicated and time-consuming preparations. PTFE Syringe Filter is mainly used for sample pre-filtration, clarification and removal of particulate matter, and sterilization and filtration of liquids and gases. HPLC and GC are the preferred methods for small samples.

Aijiren’s butyl and PTFE composite Septa is often used in 20mm Aluminum Crimp Cap. This combination of Closures is suitable for 20mm crimp headspace vials. The 3mm thickness of Septa is convenient for sealing and will not be damaged by puncture. The sampling head. As a factory direct sale, Aijiren saves you the accumulated sales cost of middle-level distributors. The price is more competitive and its own technical advantages provide reliable quality assurance for each batch of products shipped out of the factory, so that customers can use it more assured.

The workers of Aijiren in the picture are packaging the Micro-Insert. This kind of Micro-Insert is usually suitable for Autosampler Vial. For the Autosampler Vial of 9mm, 10mm, 11mm caliber, the capacity is 300ul, and the outer diameter is 5 or 6mm micro-insert. Both can be adapted, but for Autosampler vials with a diameter of 8mm, only micro-inserts with an outer diameter of 5mm can be used.

The 9mm screw cap produced by Aijiren has a center hole to facilitate the sampling of the injection needle of the autosampler. The injection needle will penetrate the septa and enter the interior of the vial for extraction. The thread pattern of the 9mm screw cap fits closely with the vial. Septa is slightly squeezed between the cap and vial to fill the gap, so the sealing is extremely high.

Aijiren’s 9mm Screw Neck Autosampler Vial is one of Aijiren’s most popular products. The screw neck and 2ml capacity are very compatible with the specifications of the autosampler, especially Aijiren’s 100pcs/pack, which is very convenient for customers to use. It is well received, has strong stability and is not easily affected by other reagents.