16mm, 25mm Test Tubes for Water Analysis

Aijiren’s range of test tubes and sample cells is specifically engineered for the rigorous demands of environmental monitoring and laboratory research. Our 16mm COD tubes and 25mm FTU vials provide the optical clarity and chemical resistance necessary for accurate water quality measurements. Whether for chemical oxygen demand (COD) digestion or microbial incubation, our borosilicate 3.3 glassware ensures reliable results and safe sample handling.