Aijiren Provide Chromatography Consumables since 2009

Polypropylene Screw Micro Vials can be used in most standard gas and liquid chromatography autosamplers. These lightweight, economical vials are made of durable polypropylene with good chemical resistance. The conical interior ensures maximum recovery of contents without the hassle of removable inserts.

Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage. One piece polypropylene cap and membrane are also available. These pierceable screw thread caps are designed for one time use and reduce sample preparation time as there is no cap and seal to assemble.

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.

HPLC autosampler vials  are generally categorized by vial diameter, vial height, and thread finish. Clear glass and amber glass have similar inert properties. Amber glass is used to protect sensitive samples from UV light. Markings on the vials provide sample identification information.

The clear glass crimp vial produced by Aijiren uses borosilicate hydrochloric acid glass. This type of glass is divided into 5.0 type and 7.0 type. Customers can choose according to their own needs. The quality of 7.0 type is better and it can carry more reagents.

A crimping tool is required to seal the cap, and a deburr or cap remover is required to remove the seal. There are several types of manual crimping machines, including the adjustable precision crimping machine provided by Chromatography. The adjustable hand crimping pliers have adjustable stoppers on the handle to provide consistent sealing every time.

The 24mm Screw Cap produced by Aijiren is often paired with 24mm Sample Storage Vial. This type of Vial is used to store samples and sometimes used in autosamplers. For example, 40ml Vial is often called EPA Vial, and the center hole on the Cap is here. It will be useful in time, the sampling tool can easily pierce through the septa for sampling without causing sample contamination.

I250, I300 Vial Inserts
250ul, 300ul Volumn
Flat Bottom
Clear Glass

Aijiren COD Test Tube is small in size and light in weight. It can be tested without any other laboratory equipment and technicians; it only takes 3-5 minutes to test a sample, without additional materials or instruments, and is easy to operate.

Autosampler vials are generally made of hydrolytic glass or borosilicate, with various specifications.  Screw Glass vial for autosampler instrument is made of borosilicate glass. Different vial mouth designs meet different actual needs. 

Aijiren’s 9mm Amber Vial has a huge production workshop and many production lines. The 9mm Amber Vial provided by Aijiren is 100 pcs/pack. Generally speaking, it is packaged in PP Box. The minimum order quantity is 10 boxes. It supports two-in-one packaging with PP Closures or Individually packaged.

COD digestion vials are specialized containers used in chemical analysis for determining the chemical oxygen demand (COD) of a water sample. COD is a measure of the amount of oxygen required to chemically oxidize the organic and inorganic compounds present in the water.
These vials are typically made of high-quality glass or borosilicate glass, which is resistant to chemical reactions and can withstand the high temperatures necessary for the COD digestion process. The vials are designed to hold a specific volume of the water sample and the reagents required for the COD test.

The 13-425 4ml Screw Vial offers several key features and benefits. Its high quality glass construction ensures chemical resistance and maintains sample integrity during storage and analysis. The screw cap design provides a tight seal, preventing leakage and minimizing the risk of contamination. The vial’s transparency allows for easy visualization of samples, improving accuracy and efficiency. It is widely used in various applications including chromatography, pharmaceutical analysis, environmental testing and more.

Aijiren manufacturer’s 11mm Snap top cap with Ptfe silicone septum is used for 2ml sample bottles. The neck of the vial has two horizontal lines, which is convenient for snapping the cap. The snap cap is very convenient to seal, but it is not suitable for storing samples. Only suitable for short-term storage of samples.

Polypropylene screw cap with septum-The polypropylene screw cap with septum provides an anti-evaporation seal. The double layer includes silicone and PTFE. 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.

The COD Test Tube produced by Aijiren is often used in chemical oxygen demand testers. Since the chemical oxygen demand test is a test that requires strong corrosive reagents, Aijiren uses the most inert and stable glass to produce the COD Test Tube, which is produced by Aijiren. COD Test Tube meets customer requirements for oxygen demand testing.

Chemical oxygen demand is a vital test for assessing the quality of effluents and waste waters prior to discharge. The Chemical Oxygen Demand (COD) test predicts the oxygen requirement of the effluent and is used for monitoring and control of discharges, and for assessing treatment plant performance. The impact of an effluent or waste water discharge on the receiving water is predicted by its oxygen demand. This is because the removal of oxygen from the natural water reduces its ability to sustain aquatic life. The COD test is therefore performed as routine in laboratories of water utilities and industrial companies.

The Crimpe Top headspace vials produced by Aijiren are usually made of Aluminum. A special model is SBC201202, which uses double-sided Septa made of PTFE/Silicone and Crimp Top blue Magnetic Aluminum Cap with 8mm center hole.

Sterile Syringe Filters
While the primary function of a syringe filter is to remove particulates from a liquid sample, you will select either a sterile or non-sterile filter, depending on the end application.
Sterile syringe filters are used to sterilize non-sterile solutions or clarify sterile solutions. Learn more about sterile filters by application.

The opening of the vial produced by Aijiren is 40% larger than the standard opening aluminum sealed bottle
It is made of transparent Class 1 Class A or Amber, Class 1 Class B borosilicate glass
Sample vials provide standard progressive pasteable patches for easy filling and identification

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.

10ml Crimp Headspace Vial is used in gas chromatography analysis experiments. For example, it is placed on an automatic sampler, and the sample is heated to vaporize the gas, and the automatic sample needle penetrates the septa into the vial to extract the gas for detection , So the tightness requirements for Crimp Headspace Vial are higher.