Test strips, test sticks and reagent papers, including test strips, test sticks and reagent papers with a color comparison scale, for the analysis of water, of aqueous solutions, of waste water and process solutions including test strips, test sticks and reagent papers for the determination of active oxygen, of aluminum, of ammonium, of arsenic, of ascorbic acid, of calcium, of chlorine, of chloride, of chromate, of cyanide, of formaldehyde, of iron, of glucose, of potassium, of cobalt, of copper, of molybdenum, of nickel, of nitrate, of nitrite, of peracetic acid, of peroxide, of phosphate, of sulfate, of sulfite, of zinc and of tin in water, in aqueous solutions, in waste water, and process solutions.

Devices and instruments for analyzing water, aqueous solutions, waste water and process solutions, including devices and instruments for evaluating test strips, test sticks and reagent papers for analyzing water, aqueous solutions, waste water and process solutions, including devices and instruments for evaluating test strips, test sticks and reagent papers for determining active oxygen, aluminum, ammonium, arsenic, ascorbic acid, calcium, chlorine, chloride, chromate, cyanide, formaldehyde, iron, glucose, potassium, cobalt, copper, molybdenum, nickel, nitrate, nitrite, peracetic acid, peroxide, phosphate, sulfate, sulfite, zinc and tin in water, aqueous solutions, wastewater, and process solutions.

Reagent paper with a color comparison scale for the analysis of water, of waste water and of utility solutions.