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Hydrometers & Refractometers

Hydrometers & Refractometers

Hydrometers and refractometers are instruments used to measure the specific gravity of your saltwater or the ratio of the density of the liquid to the density of the water. Bulk Reef Supply carries the Red Sea Hydrometer with Integrated Thermometer and the Milwaukee Digital Seawater Refractometer.

1 Review

Hanna Instruments
Marine Monitor (pH/Salinity/Temperature)
$249.00
Earn 249 Reward Points
$249.00
$True Seawater Refractometer - D-D The Aquarium Solution$

D-D The Aquarium Solution Ltd
True Seawater Refractometer - D-D The Aquarium Solution
$69.99
Earn 345 Reward Points Earn 690 Reward Points
$69.99
27 Reviews

Tropic Marin
High Precision Hydrometer
$36.65
Earn 36 Reward Points
$36.65
$Refractometer for Reading Salinity with Calibration Fluid$

5 Reviews

Bulk Reef Supply
Refractometer for Reading Salinity with Calibration Fluid
$36.99
Earn 180 Reward Points Earn 360 Reward Points
$36.99

Add to Cart
$LED Refractometer for Reading Salinity with Calibration Fluid$

5 Reviews

Bulk Reef Supply
LED Refractometer for Reading Salinity with Calibration Fluid
$39.99
Earn 195 Reward Points Earn 390 Reward Points
$39.99

Add to Cart
59 Reviews

Hanna Instruments
HI98319 Marine Salinity Tester
$79.99
Earn 79 Reward Points
$79.99
$Refractometer Calibration Solution$

7 Reviews

Bulk Reef Supply
Refractometer Calibration Solution
$6.99
Earn 30 Reward Points Earn 60 Reward Points
$6.99
$MA887 Digital Seawater Refractometer - Milwaukee$

134 Reviews

Milwaukee Instruments
MA887 Digital Seawater Refractometer - Milwaukee
$128.70
Earn 640 Reward Points Earn 1,280 Reward Points
$128.70
2 Reviews

IceCap
Salinity/Temperature Digital Pocket Tester
$74.99
Earn 74 Reward Points
$74.99
5 Reviews

Hanna Instruments
25-Pack HI70024P 35ppt Salinity Calibration Sachet
$27.00
Earn 27 Reward Points
$27.00

Add to Cart
$Refractometer & Hydrometer Calibration Standard$

4 Reviews

Brightwell Aquatics
Refractometer & Hydrometer Calibration Standard

Starting at: $5.04
Earn 25 Reward Points Earn 50 Reward Points

Choose Options Notify Me When In-Stock
15 Reviews

American Marine Inc.
PINPOINT Salinity Calibration Fluid
$10.79
Earn 10 Reward Points
$10.79
64 Reviews

Neptune Systems
Lab Grade Conductivity/Salinity Probe
$197.95
Earn 197 Reward Points
$197.95
$Replacement LED Cover for Refractometers$

5 Reviews

Bulk Reef Supply
Replacement LED Cover for Refractometers
$4.99
Earn 20 Reward Points Earn 40 Reward Points
$4.99
5 Reviews

Hanna Instruments
Single HI70024P 35ppt Salinity Calibration Sachet
$1.16
Earn 1 Reward Points
$1.16
7 Reviews

Neptune Systems
Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
$2.95
Earn 2 Reward Points
$2.95
$Milwaukee Protective Hardshell Case for Refractometer$

15 Reviews

Milwaukee Instruments
Milwaukee Protective Hardshell Case for Refractometer
$31.90
Earn 155 Reward Points Earn 310 Reward Points
$31.90
4 Reviews

HM Digital
SAL-1700 Salinity & Temperature Testing Pen
$69.99
Earn 69 Reward Points
$69.99
10 Reviews

Neptune Systems
PM2 Salinity Module
$89.95
Earn 89 Reward Points
$89.95

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