Water Analytics manufactures pH, oxygen and conductivity probes along with controllers and transmitters. The company was bought from Amydine in Canada and moved to Andover MA by Mark Spencer. The division of Amydine that was bought is called Aqua Metrix and has been providing a quality probe for over 20 years. Water Analytics is carrying on that tradition here in Andover MA. The company is located in the original train station on School Street.