25mm FTU Test Vials, 20ml Water Sample Cell with Cap

The 16mm COD Test Tube produced by Aijiren is mostly used for laboratory chemical analysis. Aijiren believes that COD Test Tube requires high-quality raw materials and advanced technology to complete the production, so Aijiren is very attentive to the production of COD Test Tube. Aijiren has been a veteran in the field of chromatography consumables with 20 years of production experience. He still maintains his original intention and puts the improvement of product quality in the first place.

COD testing is a good better indicator of organic pollutants in industrial wastewater containing cyanides and heavy metals. COD testing affords rapid response to changing conditions before critical problems develop.

Open COD test tube, hold it at an angle and slowly add
2.0 mL of the pretreated sample solution from the reaction tube without mixing so that two separate layers
are formed.
Screw cap securely on to test tube, hold tube by the cap, place tube into the safety bottle and shake
(Caution, test tube becomes hot). Place tube into the heating block. Start heating programme.
After 2 h remove test tube from heating block, allow to cool down to room temperature and shake gently
several times.
Clean outside of test tube and measure.
Adjust photometer to zero by using blank value “NULL”

In this test a reagent blank is used instead of the usual water blank referred to in the general photometer operating instructions. The reagent blank is prepared by adding deionised or distilled water to the reagent tube and then digesting the tube in the same manner as for the water sample.
It is not necessary to prepare a reagent blank each time the test is carried out. The reagent blank tube may be prepared weekly and used repeatedly with all samples prepared from the same batch of reagent tubes. The reagent blank should be stored in the dark between uses.

Test Tube is a term that can refer to different things depending on the context. In a scientific context, a test tube is a cylindrical glass or plastic tube used to hold and mix small amounts of liquid during experiments in laboratories. It is commonly used in chemistry, biology, and other scientific disciplines.
In a broader sense, “Test Tube” can also refer to a YouTube channel called “TestTube,” which is a popular science and educational channel owned by Discovery Digital Networks. The channel covers a wide range of topics, including science, technology, history, and culture, and provides informative and entertaining videos for viewers.

The used COD Tubetests contain strong sulfuric acid and other chemicals, so reagents must be handled carefully. The contents of the pipe should be disposed of in accordance with the requirements of local authorities.
These test tubes are SGC certified. These tubes can only be used once, so they cannot be reused.

Reusing caps and vials opens up the possibility of contamination, from solvent (liquid or vapor) interacting with the septa material as well as the atmosphere. This may seriously impact your analytical results, causes by sample contamination, chemical reaction, or evaporation. Both qualitative and quantitative errors may result, requiring time consuming, expensive, and frustrating troubleshooting and re-work.

The COD Test Tube produced by Aijiren has a capacity of 10ml, 12ml, and 15ml. The caliber is 16mm. It is often used for water quality testing and contains liquid reagents. It is mostly used in the petroleum industry and chemical analysis.

Water Sample Cell
Color: Clear
Volume: 20ml, 30ml
Size: 25x60mm, 25x95mm
Cap: with black cap

Aijiren uses high-quality raw materials to make 16mm Test Tube for Water Analysis. Customer satisfaction and praise have made Aijiren one of the largest laboratory consumables producers in southern China. First, Aijiren will stick original intention to ensure the quality of 16mm Test Tube for Water Analysis.

The 16mm COD Test Tube is a special glass tube designed for Chemical Oxygen Demand (COD) testing in the laboratory. It has a diameter of 16mm, providing ample space for sample collection and analysis. The tube is made of high quality glass, ensuring durability and chemical compatibility for accurate and reliable COD measurements.

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

The COD Test Tube is made of borosilicate glass, which can reduce pH changes and contaminants that can leach out of soda-lime glass. The glass digestion test tube can be used for analysis at temperatures higher than 130 degrees Celsius. It is made of laboratory storage for a variety of general purposes and can hold almost anything.

The COD tube provided by Aijiren uses high-quality glass, which is extremely inert and will not react with reagents. Through Aijiren COD tube test, the time required for the measurement process is greatly shortened, especially for standard analysis and series measurement, which greatly reduces the workload.

COD testing is a good better indicator of organic pollutants in industrial wastewater containing cyanides and heavy metals. COD testing affords rapid response to changing conditions before critical problems develop. 

It is worth noting that if the used COD Tubetests contain strong sulfuric acid and other chemicals, the reagents must be handled carefully. The items in the pipeline should be disposed of in accordance with the requirements of local authorities. These tubes can only be used once and cannot be reused.

Tube tests for photometric analysis convince by their easy handling and therefore are the first choice for routine, laboratory and process analysis. A maximum in accuracy and precision is granted for the measurement results due to exactly pre-dosed reagents in 16 mm cuvettes and additional reagents.

COD Test Tube is one of Aijiren’s main products. It can complete many important experiments, such as digestion colorimetry, water quality test, oxygen demand test, etc. The COD Test Tube produced by Aijiren has high inertness, good quality and stable tube. Aijiren has become a well-known manufacturer of chromatography consumables in southern China by virtue of the good quality of COD Test Tube.

Testing water for Total Organic Carbon (TOC) is no longer exclusive to the environmental industry. With the latest USP methods, TOC is now a concern for any industry using Purified Water and Water for Injection. Aijiren Low Level TOC Vials are specially cleaned and packaged to reduce TOC to the lowest levels possible, assuring a low background for your testing.

The COD Test Tubes produced by Aijiren are often used for digestion colorimetric experiments. This kind of experiment has high requirements for COD Test Tubes and has a wide range of applications. Pharmaceutical, petroleum, chemical, water quality, etc. all need to use digestion colorimetric experiments. experiment. Aijiren’s COD Test Tubes can well meet the requirements for consumables in the digestion colorimetric experiment.