Description
Uncompromising Salinity Accuracy for Sensitive Reef Systems
Maintaining a precise salinity level is critical for coral health, invertebrate survival, and overall reef stability. While swing-arm hydrometers and uncalibrated refractometers can drift over time, the Tropic Marin High Precision Hydrometer Set offers lab-grade, physical measurement reliability that never loses calibration.
Handmade in Germany, this glass hydrometer allows aquarists to measure specific gravity with extreme precision. Paired with a high-quality 500 mL graduated cylinder, testing outside your display tank is clean, easy, and accurate.
Key Features & Benefits
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Lab-Grade Precision: Maximum deviation of less than 0.0002 at 77°F (25°C), ensuring exact salinity tracking for delicate stony corals (SPS/LPS).
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Included 500 mL Graduated Cylinder: High-clarity testing vessel with a stable, removable plastic hexagonal base and pour spout. Prevents messy spills and protects the floating hydrometer from tank currents.
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Large, Easy-to-Read Scale: Features a fine, expanded scale marked in increments of 0.0005, making it effortless to pinpoint exact readings between 1.020 and 1.032.
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Recommended Target Indicator: Features a highlighted recommended range on the internal float for quick, at-a-glance checks.
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Handmade in Germany: Crafted to strict standards using high-grade glass to maintain consistency and long-term durability.
Technical Specifications
| Feature | Specification |
| Measurement Range | 1.020 to 1.032 Specific Gravity (S.G.) |
| Resolution / Graduations | 0.0005 |
| Maximum Deviation | ±0.0002 |
| Reference Temperature | 77°F / 25°C |
| Cylinder Capacity | 500 mL |
| Cylinder Construction | Borosilicate glass with plastic base & bumper ring |
| Hydrometer Length | ~14 in (35.5 cm) |
What's Included in the Box
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(1) Tropic Marin High Precision Glass Hydrometer
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(1) 500 mL Glass Graduated Cylinder
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(1) Removable Hexagonal Plastic Base
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(1) Protective Plastic Cylinder Bumper Ring
How to Use
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Fill the included 500 mL glass cylinder with aquarium water up to approximately 3/4 full.
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Ensure the sample temperature is as close to 77°F (25°C) as possible for optimal accuracy.
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Gently lower the clean, dry hydrometer into the cylinder, giving it a light spin to dislodge any clinging air bubbles.
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Read the specific gravity scale directly at eye level at the bottom of the liquid meniscus.
