The IceCap Digital Pocket Tester is one of the newer pocket testers that use electric conductivity to more accurately measure the specific gravity and salinity of aquarium water for under $100.
As we mentioned earlier, the new wave of devices that measure salility with electrical currrent are more accurate than digital refractometers.
Just dip the pen in the water and within seconds, the salinity and temperature are measured and displayed the pen’s backlit LCD screen. The pen also features automatic temperature compensation.
While there isn’t much information on this pen, looking at the specifications, we see it notes the range of specific gravity (1.000 ~ 1.041), PPT range (0-50), and PSU (practical salinity unit) range (0-60) and temperature from 32-176°F. This pen should allow you to toggle between SG and PPT and potentially even PSU to give you an even more accurate reading (and maybe for the average reefer, more convoluted reading).
The IceCap pen retails for $79.99 and is available now.