Dymax RF-20 Seawater Refractometer
R1 386.00
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Dymax RF-20 Seawater Refractometer
Product Details
Dymax RF-20 Seawater Refractometer – Ultimate Precision for Reef & Brackish Tanks
Stop guessing your tank parameters with unreliable plastic hydrometers! The Dymax RF-20 Refractometer offers instant, laboratory-grade salinity testing you can trust. Built with anti-corrosive materials and featuring a dual-scale display (PPT and Specific Gravity), this optical tester is calibrated directly for seawater to safeguard your corals, invertebrates, and fish.
- Box Includes: Premium Optical Refractometer, Calibration Screwdriver, Fluid Pipette, Calibration Reference Fluid, and a protective storage pouch.
The Dymax RF-20 Seawater Refractometer is a precision optical instrument engineered specifically to measure the absolute salinity and specific gravity of marine aquariums. Unlike standard industrial brine refractometers, the Dymax RF-20 is calibrated against the exact ionic content of natural seawater, providing crucial accuracy for sensitive reef systems and brackish setups.
Key Product Features
- Dual-Scale Display: Features high-resolution focused markings displaying both Parts Per Thousand (20–40 PPT) and Specific Gravity (1.010–1.030 SG) at a baseline of 77°F/25°C.
- Seawater Specific Algorithm: Programmed via a mathematical algorithm to calculate light refraction specifically for marine salts, bypassing the reading errors common with generic NaCl tools.
- Anti-Corrosion Build: Manufactured using heavy-duty, corrosion-resistant materials to withstand regular exposure to highly corrosive saltwater environments.
- Automatic Temperature Compensation (ATC): Automatically adjusts for room temperature variances to provide consistent, stable readings.
Step-by-Step Usage & Maintenance Guide
- Apply the Sample: Use the included pipette to place 2–3 drops of your tank or mixing water onto the main prism slide.
- Seal and View: Close the daylight cover plate gently. Ensure the water spreads evenly across the entire glass surface with zero air bubbles trapped beneath.
- Read the Scale: Point the lens toward a natural or ambient light source and look through the focusing eyepiece. Read the value right where the blue and white boundary contrast lines intersect.
- Clean Immediately: To protect your investment, always rinse the prism with pure RODI water and dry it with a soft microfibre cloth after every single test. Never leave saltwater to dry on the lens, as salt crystals will permanently scratch the coating
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