GREENT-CAL

Chemical reagents for use in industry, science and in laboratories; Chemical reagents for use in industry, science and in laboratories, namely, for use in testing of liquids, water, sewage, turbidity, water treatment, water purification and optical tests; chemical reagents for use with optical test apparatus and turbidity measuring apparatus; chemicals, namely, reference standards in the nature of pure chemicals and chemical compositions used as a measurement base for similar substances for industrial and scientific purposes; calibration liquids for measuring turbidity