16mm Screw Neck Round Bottom COD Test Tube on Sale

Glass test tube is a cylindrical container made of glass that is commonly used in scientific laboratories for holding, mixing, and heating small quantities of liquid or solid substances. Test tubes are usually open at one end and have a rounded or slightly flared bottom. They come in various sizes, ranging from a few centimeters to several centimeters in length.
Test tubes are designed to withstand high temperatures and chemical reactions, making them suitable for a wide range of experiments and analyses.

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.

The Chemical Oxygen Demand (COD) test is widely used as a measure of organic contamination by determining the quantity of oxygen required for oxidation of reduced species including organic matter, in a water sample using a specific oxidizing agent, temperature and time reduction. 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. Lovibond’s COD vials are compatible with BOTH Lovibond and Hach® colorimeters.

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 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.

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 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.

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”

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.

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.

This COD test tube is designed with precision and functionality in mind. It features a rugged construction that can withstand the rigors of COD testing, including high temperatures and exposure to various chemicals.

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.

Aijiren has been engaged in the production of COD test tube with Caps for more than ten years, we have absolutely rich experience and familiar processes to produce COD test tube with cap, and we can guarantee the high quality of COD test tube produced by Aijiren with reasonable price.

TOC is the abbreviate by Total Organic Carbon. The TOC Direct Method from Aijiren provides a reliable and practical means for water treatment facilities to frequently measure organic carbon to optimize treatment processes. Instead of purchasing an expensive, traditional TOC analyzer or outsourcing TOC determinations to a contract laboratory, this method can provide TOC results — accurately and inexpensively — right at your facility, and without any hazardous waste.

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.

Details of Chemical Oxygen Demand Test:

2mL of a water or watse water sample are added to a 16mm glass culture tube containing the digestion reagent and a catalyst. The tube is capped with a polypropylene, PTFE lined cap and heated in a block digester at 150C for 2 hours. The orange Hexavalent chromium is reduced to a greenish trivalent chromium. The analytical range for the spectrophotometric method is 5-150ppm (measured at 420nm).

The Chemical Oxygen Demand (COD) test is widely used as a measure of organic contamination by determining the quantity of oxygen required for oxidation of reduced species including organic matter, in a water sample using a specific oxidizing agent, temperature and time reduction. 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.

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.

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