Premium Aquarium Saltwater Refractometer 0-100% & 1.000-1.070 SG – Handheld ATC Salinity Meter Tester for Marine Fishkeeping & Reef Tanks

Maintain stable and healthy marine environments with the Premium Aquarium Saltwater Refractometer 0-100‰ & 1.000-1.070 SG – Handheld ATC Salinity Meter, designed for aquarists, reef keepers, and marine hobbyists who demand accuracy and reliability. This dual-scale refractometer measures both parts per thousand (ppt/‰) and specific gravity (SG), giving you precise readings for saltwater mixing, daily monitoring, and long-term stability of your aquarium.

Engineered with automatic temperature compensation (ATC), it ensures dependable results even when ambient conditions fluctuate, making it more accurate than traditional hydrometers or low-grade meters. Built with a durable aluminum body and a comfortable rubber grip, it is lightweight yet sturdy enough for everyday use in aquariums, reef tanks, hatcheries, saltwater pools, spas, and marine research applications.

Compact and user-friendly, the refractometer requires only 2–3 drops of water on its optical prism to deliver a clear reading through the eyepiece. With its high precision (±1 ppt / ±0.001 SG) and complete accessory kit—including a mini screwdriver, pipette, cleaning cloth, and protective case—it provides everything you need to maintain perfect salinity levels for thriving fish, corals, and invertebrates.

Key Features

• Dual-Scale Measurement (0-100 ppt / 1.000-1.070 Specific Gravity, D20/20) :  Allows reading in both parts per thousand (ppt) and specific gravity (SG) - two of the most used units in marine hobby. So whether you prefer SG or ppt, you get accurate readings.
• ATC (Automatic Temperature Compensation) : Automatically adjusts for temperature variations, so your salinity readings stay reliable and accurate even when the water or ambient temperature shifts.
• High Accuracy & Resolution (±1 ppt / ±0.001 SG) : Delivers precision enough for sensitive ecosystems like coral reefs where small salinity changes can stress marine life.
• Sturdy Build & Durable Materials : Made from heavy-duty aluminum body plus ABS/rubber wrap for grip, resistant to splash and handling. The prism and optics are designed for repeated use. Comes in a hard plastic protective case.
• Complete Starter Kit Included : You get the refractometer, a mini screwdriver for calibration, a pipette/dropper, cleaning/wiping cloth, and an instruction manual. Everything you need to start measuring immediately.

Ideal application areas

• Marine / Reef Aquariums : Essential for mixing new saltwater, topping off evaporation loss, tracking salinity stability to protect fish, corals, invertebrates.
• Fishkeeping & Hatcheries : Ensuring salinity is within safe ranges for breeding, coral growth, sensitive species.
• Salt Pools & Spas : If you use salt chlorination systems or need to monitor salinity levels.
• Water Monitoring & Marine Research : Lab, field use, educational purposes where a robust, accurate handheld refractometer is needed.

Why Choose This Over Hydrometers or Basic Meters

• No floating parts = less susceptible to wear and error
• Optical refractometer gives sharper, more consistent readings
• ATC prevents major errors due to temperature changes (common problem with hydrometers)
• More durable and long-lasting with metal body, proper optics, accessory kit

Tips for Best Performance & Care

1. Calibration: Before first use and periodically after (especially if readings shift), calibrate with pure/distilled water to zero the scale.
2. Temperature Equilibrium: Allow device + sample water to reach room temperature for more accurate reading (though ATC helps).
3. Clean Up: Rinse prism and wipe dry after each use to avoid salt build-up which can lead to drift or damage.
4. Proper Storage: Keep in the hard case provided, away from direct sunlight or extreme heat/cold.

Get the Premium Aquarium Saltwater Refractometer today and ensure your marine fish, corals, and reef tanks thrive in perfectly balanced conditions.