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Refractometer

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Marine Depot...

Marine Depot Aquarium Pro Refractometer

…refractive index of natural sea water. This is a very important distinction: other salinity refractometers used for marine aquariums are designed to test saltwater and nothing else! The Marine Depot Aquarium Pro Refractometer is designed to measure the salinity of NSW taking into account all the other elements…

$64.99
Marine Depot...

Marine Depot Aquarium Refractometer

The Refractometer is a must have for all aquarium hobbyists. The proper salinity is crucial for the survival and health of your fish and corals.This high quality refractometer is extremely accurate and easy to use and calibrate. Calibration is simply done with a few drops of distilled water. This model…

$49.99
Captive Purity...

Captive Purity Refractometer

The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Reads in percent and specific gravity. An absolute must for the serious marine…

From $59.99
Milwaukee Seawater...

Milwaukee Seawater Digital Refractometer

…seawater measurements scales 3. S.G. The current standard of Specific Gravity hydrometers and refractometers. The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable. Simple and easy to use! Samples are measured after a simple user calibration…

$114.49
Hanna Instruments...

Hanna Instruments Digital Seawater Refractometer

…HI 96822 benefits from HANNA?s years of experience as a manufacturer of analytical instruments. This digital refractometer eliminates the uncertainty associated with mechanical refractometers and is rugged and portable enough to be used at home, in the lab and out in the field.The HI 96822 is an optical…

$176.99
American Marine...

American Marine Pinpoint Salinity Monitor

…reading is fully temperature compensated and the conversion chart will precisely show the corresponding density (specific gravity) or % salt (refractometer) values. Every saltwater aquarist should own this monitor; the accuracy is superb! This monitor is especially useful to determine the low level…

$109.99
Milwaukee...

Milwaukee Instruments Protective Hardshell Case for Refractometers & Photometers

Milwaukee Protective Hardshell Case for Milwaukee Refractometers and Photometers

$22.99
D-D H2Ocean...

D-D H2Ocean Magnesium Pro PLUS Salt Mix

…required add more salt or water to obtain the correct S.G. reading. Remember that S.G. changes with temperature. D-D recommends the use of a portable refractometer for accurate and consistent measurement of the S.G. of your salt solution.

From $24.99
D-D H2Ocean...

D-D H2Ocean Magnesium Pro PLUS Saltwater Mixing Kit

…digital thermometer and test specific gravity with refractometer before use.Kit Includes: D-D H2Ocean Magnesium Pro PLUS Salt Mix 6.6kg Bucket: makes 43-52 US Gallons of saltwater 1/2" diameter Tubing (10 ft) 200 watt Heater Portable Refractometer Maxi-Jet 1200 Pro Powerhead ESU Digital Thermometer

$154.35
Instant Ocean...

Instant Ocean SeaTest Hydrometer

Instant Ocean Hydrometer`s new improved design delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - every time. Easy-fill convenience keeps hands dry when filling. It has a durable, permanent needle mount and easy-read 2-color scale with "safe zone" and an extra…

$13.49
Milwaukee Seawater...

Milwaukee Seawater Digital Refractometer with Protective Hardshell Case

…seawater measurements scales 3. S.G. The current standard of Specific Gravity hydrometers and refractometers. The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable. Simple and easy to use! Samples are measured after a simple user calibration…

$146.99
Coralife 29 Gallon...

Coralife 29 Gallon BioCube Aquarium with Saltwater Mixing Kit

…digital thermometer and test specific gravity with refractometer before use.Kit Includes: D-D H2Ocean Magnesium Pro PLUS Salt Mix 6.6kg Bucket: makes 43-52 US Gallons of saltwater 1/2" diameter Tubing (10 ft) 200 watt Heater Portable Refractometer MJ1200 Pro Powerhead ESU Digital Thermometer

$432.99
Coralife Deep Six...

Coralife Deep Six Hydrometer Wide Range Specific Gravity Meter

The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other flat surface when taking salt readings. Specific Gravity and Salinity…

$7.49
JBJ 28 Gallon Nano...

JBJ 28 Gallon Nano Cube Quad PowerCompact Bulb Aquarium with Saltwater Mixing Kit

…digital thermometer and test specific gravity with refractometer before use.Kit Includes: D-D H2Ocean Magnesium Pro PLUS Salt Mix 6.6kg Bucket: makes 43-52 US Gallons of saltwater 1/2" diameter Tubing (10 ft) 200 watt Heater Portable Refractometer MJ1200 Pro Powerhead ESU Digital Thermometer

$503.99
JBJ 28 Gallon Nano...

JBJ 28 Gallon Nano Cube 27 Watt Intermediate LED Aquarium with Saltwater Mixing Kit

…digital thermometer and test specific gravity with refractometer before use.Kit Includes: D-D H2Ocean Magnesium Pro PLUS Salt Mix 6.6kg Bucket: makes 43-52 US Gallons of saltwater 1/2" diameter Tubing (10 ft) 200 watt Heater Portable Refractometer MJ1200 Pro Powerhead ESU Digital Thermometer

$592.99
Hagen Living Sea...

Hagen Living Sea Floating Hydrometer with Thermometer, C & F

Hagen Living Sea Hydrometer with Thermometer?Small 20cm (8") Accurate Easy to read Thermometer?C & F

From $7.99