measurement range：0.1 to 5mg/L（ppm）
All reagents are packaged safely to avoid harm to users and environmental pollution. Pre made reagents can also strictly control the amount of chemicals used to ensure measurement accuracy and reliability.
Reagents should be stored in a cool place (temperature below)10~20℃）TheDry and dark place to ensure a longer shelf life. Reagents that have exceeded their expiration date may still be used normally, but standard solutions need to be used for testing every week.
Kind Reminder:
After opening the reagent, it should be used up as soon as possible. After each use, the reagent bottle cap should be immediately closed to avoid oxidation or contamination of the reagent due to contact with air, which may reduce the performance and quality of the reagent and affect the measurement results.

measurement range：0.1 to 5mg/L（ppm）
All reagents are packaged safely to avoid harm to users and environmental pollution. Pre made reagents can also strictly control the amount of chemicals used to ensure measurement accuracy and reliability.
Reagents should be stored in a cool place (temperature below)10~20℃）TheDry and dark place to ensure a longer shelf life. Reagents that have exceeded their expiration date may still be used normally, but standard solutions need to be used for testing every week.
Kind Reminder:
After opening the reagent, it should be used up as soon as possible. After each use, the reagent bottle cap should be immediately closed to avoid oxidation or contamination of the reagent due to contact with air, which may reduce the performance and quality of the reagent and affect the measurement results.