The PEN-PRO has a measurement range of Brix 0.0 to 85.0% which can be used to measure almost any sample. There are 2 ways to measure with the PEN-PRO. Either dip the tip into the sample and press the START key OR press the START key and touch the tip into the sample.
Squeeze the pump to create a vacuum and then release to draw the liquid in. Cleaning is as simple as operating the pump a few times in water. The prism chamber can also be opened up for removal of persistent residues.