Key Features:

• True Seawater Calibration: Calibrated to reflect the refractive index of natural seawater, providing accurate salinity readings without the need for conversion factors.

• Auto Temperature Compensation (ATC): Equipped with a bimetallic strip that adjusts the reading scale in response to temperature changes, ensuring consistent accuracy within a range of 10°C to 30°C

• Enhanced Scale Resolution: Features a 0–40 ppt salinity scale, focusing on the 30–40 ppt range common in marine aquariums, offering 2.5 times the resolution of standard 0–100 ppt scales.

• Copper Body Construction: Built with a copper internal body for superior thermal conductivity, allowing faster temperature equilibration and more precise ATC performance

Calibration & Usage Tips

• Calibration Temperature: Calibrate the refractometer at 20°C (68°F), which is standard for most refractometers and close to average room temperature.

• Calibration Solutions: Use a 35 ppt calibration fluid for best results. Alternatively, reverse osmosis (RO) water can be used for zero-point calibration, though its purity must be ensured to avoid inaccuracies.

• Light Source: For accurate readings, use a light source that closely resembles daylight, as the refractive index is dependent on the wavelength of light