VeeGee Vee Gee STX-3 Salinity Refractometer - 0-100 PPT & SG Scale

The Vee Gee STX-3 Handheld Refractometer provides a reliable way to measure salt concentration and seawater specific gravity. Designed for portability and ease of use, this tool measures salinity in parts per thousand (PPT) from 0 to 100% and specific gravity (SG) from 1.000 to 1.070. Whether you are monitoring liquid salt concentrations or working with seawater, this device delivers accurate results with a 1.0 resolution and -1.0 accuracy. Built for real-world use, the STX-3 features automatic temperature compensation (ATC). This ensures your calibration readings remain accurate regardless of ambient temperature changes within the 10 to 30 degrees C range. The device is constructed with a durable metal and rubber outer shell, featuring a streamlined telescope-shaped design that fits easily in your hand. A built-in rubber grip protects against hand heat to maintain measurement precision, while the non-roll stand keeps the device stable during use. The scale is illuminated by ambient light, meaning no extra power source is needed for visibility.