Laboratory equipment for mass spectrometry and coating density analysis, namely, test kits consisting primarily of electronic mass spectrometry sensors for use measuring plating densities and thickness, test kits consisting primarily of mass spectrometry sensors for use measuring plating densities and water tanks in the nature of laboratory equipment for use therewith, electronic spectroscopes for measuring plating density, and electronic laboratory analyzers for measuring plating thickness and densities; electrochemistry metal plating electronic test equipment, namely, test kits consisting primarily of electronic sensors for use in measuring metal plating densities and thickness, test kits consisting primarily of electronic sensors for use measuring metal plating densities and water tanks for use with such electronic test equipment, electronic measuring instruments for measuring metal plating thicknesses, and measuring instruments for measuring plating thicknesses, namely, calipers