Scope of application:0 to 1500 mg/L（ppm）Using potassium dichromate/sulfuric acid【H2SO4】method.
CODAll reagents are packaged safely to avoid harm to users and environmental pollution. The prefabricated reagent tubes have a special diameter of16mmThe optical glass and tube cover are specially designed to prevent accidental leakage of reagents, and the prefabricated reagent tube can also strictly control the amount of chemicals used to ensure measurement accuracy and reliability.

Lovibond（Lovibond®）Prefabricated reagents do not require tedious weighing, dilution, and other reagent preparation work, avoiding the need for complex preparation processes before being used for testing. They have high accuracy, high efficiency, low cost, and minimize the impact on operators and the environment.

Lovibond（Lovibond®）Prefabricated reagents are packaged through rigorous scientific design to ensure the maximum extension of their shelf life and stability. However, due to high temperature, moisture absorption, exposure to air in the environment, bacterial growth, or light exposure, the degradation and failure of the components and properties of the reagents may occur. Effective storage and use of prefabricated reagents are basic requirements for extending their service life and ensuring measurement accuracy and stability;

The agent should be stored in a cool place (at a temperature below)25~30℃）TheDry and dark location to ensure the longest shelf life; Some reagents should also be refrigerated and stored according to the instructions on the packaging label;

If the reagent is opened, the shelf life may expire because pollutants in the environment may come into contact with the remaining reagent and react with it. Therefore, for bottled reagents, it is important to open the reagent bottle as soon as possible, pour or measure a certain amount of reagent, and immediately seal the bottle cap to minimize contact between the reagent in the bottle and the air; Do not return the unused reagents to their original bottles;

The expiration date of a reagent refers to the last storage date of the reagent. Reagents that exceed the expiration date may still be used normally, but they need to be tested weekly with a standard solution. If accurate results are obtained by using a standard solution with a concentration close to the upper limit of the test, it means that the reagent can still function normally throughout the entire testing range;

If you are measuring parameters without standard solutions, such as ozone, sulfides, etc., you cannot use reagents that have exceeded their expiration date;

Expired reagents that have expired must be processed according toMSDSHandle according to the guidance in the laboratory quality assurance statement;

▷ Roewe Bang（Lovibond®）Pre made reagents and standard solutions have been tested to ensure that they can still be used normally after being processed according to specifications after freezing. If the reagent solution or standard solution freezes during transportation, place it at room temperature [strictly prohibited from heating] until thawed, then shake repeatedly and mix evenly; If there are still undissolved crystals, slowly warm the reagent bottle in warm water and shake it repeatedly until all crystals are dissolved.