I started keeping saltwater tanks in 1996 and since then have used many different tools and instruments to measure salinity. At first it was with floating glass hydrometers, and soon thereafter it was swing arm hydrometers. These two devices use the…
Milwaukee electronic refractometer in the wild
We’ve captured a new milwaukee electronic refractometer in the wild. This guy has a light meter with fully submersible probe built into it, something that is brand new for this model. Pricing hasn’t been released yet, but don’t expect to…
Hanna Instruments digital refractometer, compensates for reef aquarium temperature
The new digital refractometer from Hanna Instruments is one svelte and highly accurate new electronic machine for testing the salinity of seawater. The $200 device is bileld as scientific and research grade: it may be overkill for many hobbyists but…
