Using Aijiren COD tube test, each user can easily perform highly sensitive and accurate water quality testing. Not only that, the time required for the measurement process is greatly shortened, especially for standard analysis and series of measurements, while greatly reducing the workload.
The chemical oxygen demand (COD) test is widely used as a measure of organic pollutants by determining the amount of oxygen required for the oxidation of reducing substances (including organic matter) in water samples using specific oxidants, and the reduction in temperature and time. COD testing can quickly respond to changing conditions before critical issues arise. The COD Test Tube produced by Aijiren can meet this condition well.
COD testing is a simplified laboratory procedure and should be carried out in accordance with good laboratory practices. If the reagent tube contains hazardous chemicals, it must be handled with care. Do not open the reagent tube when the temperature is high, because the built-up pressure may cause chemical spills. Do not open the test tube during or after sample digestion.
COD test tube can be accurately dosed. To avoid excessive chemical inventory, and improve work safety.Chemical oxygen demand is an important test to evaluate the quality of wastewater and wastewater before discharge. Therefore, COD testing is often carried out routinely in the laboratories of water companies and industrial companies.
The COD test tubes used contain hazardous chemicals, so the reagents must be handled with care. The items in the pipeline should be handled in accordance with the requirements of the local authority. These test tubes have passed SGC certification. These tubes can only be used once, so they cannot be reused.
Test Tube is often used for various digestion, water quality testing, oxygen testing, nitrogen testing, etc. in the laboratory. The test tubes provided by Aijiren can be used in many types of laboratory operations, and the high-quality glass can prevent the test tubes from reacting with chemicals.
How to clean the COD test tubes in the laboratory after digestion? When cleaning the test tube, you should pour out the waste liquid in the test tube first, then pour water, shake, and then pour out, so that you can wash several times.
If the inner wall of the test tube is attached to a substance that is not easy to clean, it should be scrubbed with a test tube brush. Move the test tube brush up and down.
If the water adhering to the inner wall of the cleaned test tube neither collects into water droplets nor flows down, it indicates that the test tube has been cleaned. It should be placed upside down on a dedicated shelf.
When cleaning the COD test tube, it can be immersed in dilute acid and rinsed, and then ultrasonically cleaned. But be careful not to scratch the inside and outside of the test tube. Otherwise, the test tube cannot be used again.
Chromic acid soaking COD test tube is the most direct way to clean used COD test tube. If there is a problem or danger, you can use nitric acid and a thin test tube brush to clean repeatedly, or use an ultrasonic cleaner after soaking.
The wear of the COD tube will also affect the measurement results. In order to reduce wear as much as possible, the seriously worn COD tube should be eliminated in time. When cleaning, avoid rubbing and washing the digestive tube with a test tube brush, which can easily cause scratches and affect color comparison.
It is recommended to pour the waste liquid from the digestion tube into the waste liquid tank, rinse the digestion tube with tap water for cleaning, and then use ultrasonic cleaning. Wipe the remaining dirt on the outer wall with an alcohol cotton cloth, and soak the cleaned digestion tube in deionized water for several hours, and then place it in an oven at 60¡ã to 70¡ã to dry overnight.
Used COD Tubetests contain strong sulfuric acid and other chemicals, so 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, so they cannot be reused.
Through the Aijiren COD tube test, the time required for the measurement process is greatly shortened, especially for standard analysis and series of measurements, while greatly reducing the workload. The COD test tube contains a precise dose of reagent. Therefore, excessive chemical inventory is avoided and work safety is improved