The HI3811 is a chemical test kit that measures alkalinity by titration with hydrochloric acid. The HI3811 is supplied complete with all of the reage ... WhatsApp me if you interested https://m.envirolab.com.my/index.php?ws=showproducts&products_id=4670036

The HI3817 is a chemical test kit that measures six parameters common in water quality testing: alkalinity, chloride, hardness, iron, pH, and sulfite ... WhatsApp me if you interested https://m.envirolab.com.my/index.php?ws=showproducts&products_id=4670038

The HI3817BP is a Backpack Lab designed for educators and environmental science students, containing lessons, activities, and test kits that relate t ... WhatsApp me if you interested https://m.envirolab.com.my/index.php?ws=showproducts&products_id=4670039