Aqua check 2 is the photometer for all professional applications where more parameters have to be monitored in addition to the eight standard values ammonium nitrite nitrate chlorine silicon ph value phosphate copper it can also detect iron fluoride and oxygen in water aqua check is easy to handle as it is controlled with two keys only in no time at all the photometer provides digital measuring results at lab level precision the aqua check 2 complete set is available in a robust ha