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Hydrometers & Refractometers

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12 Item(s)

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  1. Deluxe Salinity Refractometer with ATC

    Deluxe Salinity Refractometer with ATC

    $39.95

    Reward Points Policy 399 AQUAPOINTS

    Deluxe Salinity Refractometer with ATC

    For the most precise measurement of salinity, the experts use a Refractometer. This high-tech instrument is used to measure salinity when perfect conditions are needed for breeding, or keeping very delicate corals. This easy-to-use and read device will allow you to keep track of your tank's salinity fluctuations. This instrument also features ATC, automatic temperature compensation that will allow the Refractometer to gauge an accurate measurement in a range of temperatures. Simply look through the eyepiece to measure. Size: 8" long x 1" diameter.

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  2. Red Sea Seawater Refractometer, High Accuracy

    Red Sea Seawater Refractometer, High Accuracy

    $54.95

    Reward Points Policy 549 AQUAPOINTS

    Red Sea Seawater Refractometer (Reef Spec) High Accuracy

    Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl - rather than seawater) and at a temperature of 15oC/59 0F rather than 25oC/77 0F. Thus, a measurement deviation of up to 1.5ppt is possible, which can have a significant adverse effect on coral growth and coloration. The PPT scale on Red Sea's Seawater refractometer is calculated using an algorithm for seawater and therefore will give a reading of the Absolute Salinity of seawater. The PPT scale on regular salinity refractometers are calculated using an algorithm for Brine. Using a Brine refractometer for Seawater will give an error of approximately 1.5ppt in the salinity reading.

    • Directly reads the absolute salinity of seawater at 25°C/77°F ( No need for seawater or temperature compensation factors)
    • Specifically designed for the ionic content of seawater (NSW) for more accurate salinity measurement (industry standard refractometers are calibrated for salt brine ).
    • Calibrated for seawater (NSW) at 25oC/77oF, the normal temperature range for reef aquariums (most standard refractometers are calibrated at 15C/59F ).
    • Easier to read, higher resolution display, focussed to the relevant range for reef aquariums of up to 40ppt
    • Includes Integrated Automatic Temperature Compensation (ATC) for accurate measurement at standard ambient temperature.
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  3. Aqua Medic Salinity Refractometer with ATC

    Aqua Medic Salinity Refractometer with ATC

    $94.95

    Reward Points Policy 949 AQUAPOINTS

    Aqua Medic Salinity Refractometer with ATC

    Having an accurate measure of an aquariums salinity or specific gravity is essential to every marine enthusiast.
    Our Refractometer is the fastest, easiest, and most accurate way to know.
    Simply add a drop of your system water to the lens, close the cover, and look through the adjustable focus eye-piece to read the clearly marked value across a simple scale.
    Far more accurate than dip and read style hydrometers and easier to use than floating hydrometers, our Refractometer is a must have for every marine aquarium hobbyist.
    This high-quality measurement device reads in both salinity and specific gravity values that are temperature compensated and can be easily calibrated with a drop of freshwater.
    Each Reefractometer comes in a padded case, complete with a fine-adjustment tool, sample pipette, and full instructions.

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  4. Sybon Salinity Refractometer with ATC

    Sybon Salinity Refractometer with ATC

    $59.95

    Reward Points Policy 599 AQUAPOINTS

    Sybon Salinity Refractometer with ATC

    For the most precise measurement of salinity, the experts use a Refractometer. This high-tech instrument is used to measure salinity when perfect conditions are needed for breeding, or keeping very delicate corals.
    This easy-to-use and read device will allow you to keep track of your tank's salinity fluctuations. This instrument also features ATC, automatic temperature compensation that will allow the Refractometer to gauge an accurate measurement in a range of temperatures. Simply look through the eyepiece to measure.
    Complete instructions included.

    Size: Unit is 8" long x 1" diameter.

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  5. Milwaukee MA887 Digital Refractometer

    Milwaukee MA887 Digital Refractometer

    $109.95

    Reward Points Policy 1,099 AQUAPOINTS

    Milwaukee MA887 Digital Refractometer

    The MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.

    Specifications:

    Range:

    • PSU: 0 - 50
    • PPT: 0 - 150
    • S.G.: 1.000 - 1.114
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  6. Milwaukee MA887 Digital Saltwater Refractometer with Case

    Milwaukee MA887 Digital Saltwater Refractometer with Case

    $119.95

    Reward Points Policy 1,199 AQUAPOINTS

    Milwaukee MA887 Digital Saltwater Refractometer with Case

    The MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.

    Specifications:

    Range:

    • PSU: 0 - 50
    • PPT: 0 - 150
    • S.G.: 1.000 - 1.114
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  7.  Pinpoint Salinity Monitor

    Pinpoint Salinity Monitor

    $119.95

    Reward Points Policy 1,199 AQUAPOINTS

    Pinpoint Salinity Monitor by American Marine

    PINPOINT Salinity Monitor™ will accurately and immediately measure the amount of salt in any marine or freshwater system. 
    The reading is fully temperature compensated, which is difficult or impossible with nearly any commercial hydrometer.
    The conversion chart will precisely show the corresponding density (specific gravity) or % salt (refractometer) values.
    This monitor is especially useful to determine the low level of salt required for Koi, whether in an aquarium or outdoor pond.

    * Given proper care, the PINPOINT Salinity Monitor™ should last a lifetime. 
    * Powered by a standard 9-volt battery (not included)

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  8. Red Sea Hydrometer With Thermometer

    Red Sea Hydrometer With Thermometer

    $10.95

    Reward Points Policy 109 AQUAPOINTS

    Red Sea HydrometerWith Thermometer

    Unique integrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium. 
    Patented design enables device to be permanently installed inside aquarium, allowing time for micro bubbles to dissolve for continuous, accurate, real-time reading of salinity in addition to regular periodic reading. 
    Built in digital thermometer ensures water being tested is at correct temperature. Bubble-proof casing for easy reading results.

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  9. Fluval Sea Hydrometer

    Fluval Sea Hydrometer

    $7.95

    Reward Points Policy 79 AQUAPOINTS

    Fluval Sea Hydrometer

    Fluval Sea Hydrometer provides an accurate and convenient method of measuring specific gravity and salt level in marine aquariums. Regular testing is strongly recommended as stable salinity levels are essential for the health of marine fish and invertebrates. Compact and easy to use, the hydrometer can be permanently installed inside the tank for continuous readings. Its slim, low-profile design camouflages well inside the tank and will not diminish the aesthetics of the aquarium. It can also be used as a portable device, allowing you to take samples simply by submerging it in the water.

    It features large, easy-to-read markings with ideal salinity range clearly marked in green for clarity.

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  10. 5 ml. Transfer Pipette

    5 ml. Transfer Pipette

    $0.49

    Reward Points Policy 4 AQUAPOINTS

    5 ml. Transfer Pipette

    Unbreakable all-in-one pipets eliminate the hazards of broken glass and exposure to infectious materials. Put an end to matching rubber bulb with glass pipet. Since entire unit is disposable, these pipets prevent cross-contamination to samples and reduce airborne contamination to personnel.

    * Inert to biological fluids and most acids With 0.25mL graduations.
    * Overall length: 6 in. (154mm)
    * 5.8mL capacity.
    * Draw 3.4mL per squeeze.

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  11. Pinpoint Salinity Calibration Fluid  53.0mS / 1.026 SG

    Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG

    $7.95

    Reward Points Policy 79 AQUAPOINTS

    Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG

    Insure a perfect reading with your American Marine Salinity Meter- This salinity calibration fluid sets your system at the precise reading you need. 53.0mS

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  12.  Aqua Craft Products Salinity Calibration Fluid 53.0mS / 1.026 SG, 2 oz. 60ml.
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