PASPORT Water Quality Colorimeter

The PASPORT Water Quality Colorimeter is designed specifically to support the chemical analysis of water samples using PASCO’s ezSample Snap Vial test kits (sold separately). It includes built-in calibration curves for determining the concentration of ions in the solution, making it incredibly simple to use in the classroom or field. 

https://www.pasco.com/products/sensors/pasport/ps-2179#specs-panel