Hydrometer

…the Tropic Marin Hydrometer comes in. The Tropic Marin High Precision Hydrometer provides an exact and reliable measurement of specific gravity, and it never needs to be re-calibrated, so it's a perfect reference device for calibrating other equipment. High precision hydrometer for determining the…

Why does BRS recommend this? If you have been using a hydrometer and have never tried a refractometer then you should really invest in one.  They use much less water, and can easily be calibrated for accurate repeatable readings.  For the most accurate readings  you will want to calibrate the…

Precise & Reliable Specific Gravity Readings in any Lighting Conditions! Refractometers are a must-have piece of equipment for any aquarists! Easily and accurately measure the salinity of your tank and with the built-in LED light, your readings will be consistent no matter the type of ambient light…

Keep your refractometer readings accurate! A refractometer is easily one of the most important tools to have if you own a saltwater tank. Without a refractometer, we would be guessing at how much salt is in the water, and more than likely would not be correct! Even if you have a refractometer, it is…

Designed for Simple Aquarium Salinity Testing Hanna Instruments HI98319 Marine Salinity Tester measures electrical conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are measured, and then using the temperature reading,…

…Parts Per Thousand of saturated salt. This is the oldest of the 3 seawater measurements scales S.G. - The current standard of Specific Gravity hydrometers and refractometers.   The Milwaukee Instruments MA887 digital refractometer is easy to calibrate and easy to read and provides highest accuracy…

Salinity / Conductivity Probe – Lab Grade Start measuring salinity in your tank and get alerts when it is out of range. Replace an old probe Add salinity monitoring to your system via the Salinity Module: PM2     Start measuring salinity in your tank and get alerts when it is out of range. Replace…

Quickly and accurately get a digital readout of the salinity and temperature of your aquarium water. Seawater contains a variety of elements that will contribute to the overall specific gravity of the water. Many digital salinity meters are calibrated to read a sodium chloride only or brine solution…

The American Marine PINPOINT Salinity Monitor will immediately give an accurate measure of salt levels in any aquarium. The reading is fully temperature compensated. With proper care this PINPOINT Salinity monitor should last a lifetime. PINPOINT Salinity Monitor Features: Includes conversion…

…your tanks saltwater is mixed correctly. 1.0264sg  |  35ppt  |  53µS   Two Sizes Available 60mL - great for refractometers 250mL - ideal for hydrometers   Calibration of any testing device is required and the more often you perform calibration procedures the more accurate your readings will be.…

Why does BRS recommend this? Having the ability to monitor the salinity of your reef tank is a very valuable piece of information.  Usually, if something is to go wrong with your tank, you will usually see a change in salinity from temp, to a top off unit being stuck on, if you have a Neptune Apex…

NIST Traceable Salinity Calibration Hanna HI70024P Salinity Calibration Sachets are perfect for any conductivity probe or pen. The single-use sachets are made of light-blocking foil that prevents oxidation, ensuring the solutions are as fresh as the day it was packaged. Each sachet is marked with a…

Protective hardshell case from Milwaukee Instruments. Store your refractometer or photometer

If you are constantly searching for the right light source to read a refractometer, you may want to upgrade your current refractometer to utilize a LED illuminated prism cover. The cover has a built-in LED light that will give you consistent readings and never leave you without proper light to take…

PINPOINT Salinity Calibration Fluid is 53.0 mS standardized fluid for calibrating PINPOINT Salinity Monitors as well as refractometers. PINPOINT Salinity Calibration Fluid calibrates to sg 1.026 or 35ppt. PINPOINT Salinity Calibration Fluid calibrates to sg 1.026 or 35ppt. 2.2 FL OZ (65mL)  …

53000 µS Conductivity Calibration Solution - Use this calibration solution to calibrate your Conductivity Probe and PM2 for saltwater salinity monitoring applications. Conductivity probes can be used for many different functions from letting you know the salinity of a tank to the quality of RODI…