The Marine Salt Testa is a three-in-one electronic testing pen that measures conductivity, temperature and salinity. And it floats. The new testing device from Trans Instruments can easily be calibrated, it is water proof and has a replaceable electrode tip. We love our refractometers, especially ones that are fine-tuned for seawater. With many tanks to test if we could shave ten seconds required to load up, read and clean a refractometer we’d probably end up testing salinity much more often. If an aquarium product distributor ends up importing the Salt Water Testa to the US it would probably retail for $125 to $150 retail. A few more pics when you keep reading.