Review on 🌡️ Extech RF20 Temperature Compensation Refractometer: Accurate Measurements with Advanced Temperature Compensation Technology by Matt Simpsons

Let me start by saying that this is an absolutely superb product. I finally know the exact salinity of my tanks in a matter of seconds. There are some great things that come with this refractometer that are not mentioned in the description. The package includes a small bottle of distilled water and a mini flathead screwdriver for calibration before first use. It also comes with a nice mini microfiber cloth to wipe down the prism between uses. This is by far the most accurate way to measure the salinity of your aquarium and I can assure you that you will not be disappointed.