Digital Salinity Meter 3-in-1 Saltwater Tester – Specific Gravity, Salinity & Temperature Pen Hydrometer, High Accuracy Water Quality Tester for Aquarium, Marine, Pool, Hydroponics, Aquaculture

About this item

• Smart & Easy to Use – Backlit LCD screen for clear readings, automatic temperature compensation (ATC), and audible beeps at the start and finish of testing. Designed for quick, hassle-free measurements.
• 3-in-1 Salinity Testing – Measures Specific Gravity (1.000–1.045), Salinity (0–55 ppt), and Temperature (1–99 °C). Perfect for aquariums, marine reef tanks, swimming pools, hydroponics, aquaculture, and more.
• High Accuracy & Resolution – Specific Gravity resolution 0.001 (±0.002), Salinity 0.1 ppt (±1 ppt), and Temperature ±1 °C. Detects even subtle water quality changes for reliable monitoring.
• Auto Power-Saving Design – Turns off automatically after 60 seconds of inactivity. Low battery indicator ensures uninterrupted testing. Powered by 2 × AAA batteries for convenience.
• Portable & Durable Build – Compact pen-type body fits easily in one hand. Life waterproof design makes it ideal for both indoor lab work and outdoor field testing. Carry anywhere for instant, accurate water measurements.