The eXact iDip Photometer System has been around for awhile but Industrial Test Systems recently updated the photometer with new calculations. Now, users can find calculations for the Langlier Saturation Index and Magnesium Hardness. Automatic caluclations have been added that are designed find desired values and display them on a smart phone or on the iDip. For more information call (800) 329-9712 or go to