screw thread caps

The worker of Aijiren shown in the picture is inserting a 22mm Silicone/PTFE Septa into a 24mm Screw neck Cap. The worker wears finger cots and holds a tool to press harder to consolidate the tightness of the Cap and Septa. Since Aijiren’s automated merging of Cap and Septa machines is only suitable for the closure of 2ml autosampler vial, this large-volume closure requires manual combination by workers. Aijiren uses a dust-free workshop for production and packaging, so customers can be completely assured of hygiene issues.

The 9mm Screw Closures produced by Aijiren have many advantages such as high quality, strong adaptability, resistance to cracking, high temperature resistance, chemical resistance, etc. Since 9mm Screw Closures have many different styles and materials, the demand for 9mm Screw Closures is very high. High and diversified options also allow customers multiple choices.

When Aijiren produces screw top hplc vial, it will produce matching screw neck PP Cap, and different calibers and different types of vial require different Caps. In this case, new molds need to be polished for Cap production. The worker in the picture is here. For the grinding of the new mold, only the use of a suitable mold to install on an automated production machine can mass produce a suitable PP Screw Neck Cap.

Aijiren’s production maintains strict quality control to ensure that the size of each batch of 9mm Screw Closures is consistent. The high-quality production quality inspection has ensured the consistent match between Cap and Septa. The lid is made of high-quality polypropylene with precise manufacturing tolerances. The septum is made of the highest quality material to ensure the normal operation of the auto-injector.

8mm screw Caps are made of high quality polypropylene, Caps have the profile of a crimp or snap closure for compatibility with robotic autosamplers, Pre-assembled septa reduces the chance of contamination during sample preparation, while saving sample preparation time in the lab.

We provide septa and caps to fit our autosampler crimping the top vial to provide PTFE protection and silicone resealability. The cap includes a double-sided PTFE septum with silicone in the middle.

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.

Aijiren’s 9mm HPLC Vial is packaged in 2-in-1, and vial uses boxes for packaging. Customers can choose cartons and plastic boxes for packaging, 100pcs/box. The cap is packed in plastic sealed bags, 100 pcs/pack. Aijiren will use a carton for packaging on the outside, and then use plastic film to wrap the carton to prevent moisture and moisture.

The screw cap produced by Aijiren is engraved with knurling on the side for excellent grip and comfort when applying it to a vial. The silicone rubber/PTFE septa used in the lining can provide an appropriate amount of resistance for the auto-injection needle during the sampling process, so that they can penetrate the sample bottle correctly without damaging the septum or the injection needle.

The polypropylene screw cap with diaphragm prevents evaporation and is highly sealed. The double layer includes silicone and PTFE. The 9mm screw cap has a shorter thread, which shortens the sealing time. The silicone septum can be injected multiple times. Screw caps lined with PTFE are used for organic samples. The screw cap provides an inert air-tight seal and can be directly pierced through the sample with a syringe needle.

9mm 2mL amber glass spiral top autosampler vials are available in a variety of neckwear and opening diameters. The caliber of large-caliber or wide-inner-diameter sample bottles is 40% larger than that of standard-caliber sample bottles. The larger opening reduces the risk of the autosampler needle being bent during sampling. Aijiren’s 2mL amber glass screw-top autosampler vials are all 5.0 type borosilicate glass.

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.