Ensure the accuracy of your most critical water parameter measurements with Brightwell Aquatics Refractometer & Hydrometer Calibration Standard. This precisely formulated solution provides a reliable, known reference point for calibrating your salinity testing equipment. By using this standard, you can trust that your refractometer or hydrometer is providing correct readings, which is essential for maintaining a stable and healthy marine environment for your corals and fish.

The Brightwell Calibration Standard is manufactured to exacting specifications to guarantee precision. It is formulated to a specific gravity of 1.0264, a refractive index of 1.3394, a salinity of 35 parts per thousand (ppt), and a conductivity of 53 µS/cm when measured at 25°C (77°F). This level of accuracy allows for the precise calibration required by sensitive reef aquarium inhabitants, removing guesswork and preventing the slow drift in measurement accuracy that can occur with testing devices over time.

This product is indispensable for any dedicated saltwater or reef aquarist who understands that stability is key to success. Whether you are setting up a new tank, performing regular water changes, or troubleshooting issues, having a properly calibrated instrument is non-negotiable. Regular use of this standard provides peace of mind, ensuring that your salinity measurements are consistently accurate and protecting your valuable livestock from the stress and potential harm caused by incorrect salinity levels.