Atago PAL-07S Digital Seawater Refractometer

The Atago PAL-07S is a handheld digital refractometer engineered for rapid and precise measurement of seawater specific gravity (S.G.). Purpose-built for aquarists, maritime professionals, and field-based technical teams requiring portable density analysis. Delivers results in approximately 3 seconds from a minimal 2-3 drop sample volume, with automatic temperature compensation ensuring consistent measurements across the 10-40°C operational range.

Operating within the 1.000-1.070 S.G. measurement window with ±0.002 S.G. repeatability, the instrument eliminates reading errors inherent to traditional optical refractometers. IP65 rating provides reliable performance in humid and field conditions. LCD display and automatic/manual calibration modes facilitate clear result visualization and routine verification protocols. At 100 g with compact dimensions (5.5 × 3.1 × 10.9 cm), the unit enables single-handed operation and straightforward portability. Powered by 2 × AAA alkaline cells, requiring no external power infrastructure.

Technical Specifications

Applications

• Salinity and S.G. monitoring in aquarium and reef tank systems
• Field measurement of seawater samples
• Performance verification in desalination facilities
• Density analysis for oceanographic research applications