Hanna Instruments Digital Marine Aquarium Refractometer Density Gauge

HI98319 is a digital salt tester designed specifically for saltwater aquariums and provides results in parts per million ppt , practice salt unit PSU or SG specific gravity. This waterproof tester uses an ammeter conductivity probe to determine the salinity in the water. This robust tester shows the reading and temperature on a large LCD display. HI98319 is a large and convenient multi-function LCD display for ppt, PSU or SG measuring probe for quick response Simple two-button operation HI98319 waterproof salt tester provides a simple, accurate and economical way to determine salt concentration in saltwater aquariums. Sea Salt for Conductivity All salt measurements displayed on the large multi-level LCD display are calculated from a lead measurement using the International Oceanographer Tables for ppt reading. Selection of measurement units, display of results in parts per million ppt, PSU practice room unit or specific gravity SG . Automatic temperature compensation Conductivity is very sensitive to temperature changes. The HI98319 has a temperature sensor for rapid salinity measurement with temperature compensation. Graphite sensors Reduce polarization effects. Usual testers use stainless steel. This means they do not tarnish and are therefore reliable and accurate to read.