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Aquarium Hydrometers - Blowout Sale! Save up to 52%


Blowout Sale! Up to 52% off on Aquarium Hydrometers at Animal Lovers Center. Top brands include Sinotech, DealMux, LVOERTUIG, Gain Express, Danner, Ade Advanced Optics, PENSON & CO., BioTek Marine, Baoblaze, HM Digital, Agriculture Solutions, Anura, HIKARI, & Aquarium Supplies. Hurry! Limited time offers. Offers valid only while supplies last.



Sinotech Hand Held New Design Brix 0-10% Brix Refractometer with Calibration Knob Rhbn-10atc
Sinotech Hand Held New Design Brix 0-10% Brix Refractometer with Calibration Knob Rhbn-10atc
By Sinotech
In Stock
$31.00

mpn: RHBN-10ATC, ean: 0799804051171,

4.4 out of 5 stars with 98 reviews
RHBN-10ATC Is An Upgraded Version Of RHB-10ATC With An Additional Features Of BUILT-IN CALIBRATION KNOB, Has Much LIGHTER WEIGHT, And LONGER. It Is Specially Designed To Work With Sugar-Related Liquids Such as Low Sugar Fruits And Vegetables Juices, ...


Jardin Salinidade e Gravidade Específica plástico resistente Oceano Hidrômetro, Clear
Jardin Salinidade e Gravidade Específica plástico resistente Oceano Hidrômetro, Clear
By DealMux
In Stock
$12.75

mpn: PT_DLM-B00ARBAMGY, ean: 6281042136238,

4.4 out of 5 stars with 72 reviews
Durable hidrômetro plástico transparente. Preciso e fácil de ler. Projetado para uso em aquários de água quentes (18-28C). As leituras são precisos e a +/- 0. 002 unidades de gravidade específica que variam de 010 1. corrigido em temperatura -...


Sinotech Hand Held Salinity Refractometer Rhsn-10atc Built-in Calibration Knob 6pcs Per Lot
Sinotech Hand Held Salinity Refractometer Rhsn-10atc Built-in Calibration Knob 6pcs Per Lot
By Sinotech
In Stock
$197.45

ean: 0799804050457,

4.2 out of 5 stars with 140 reviews
RHSN-10ATC is an upgraded version of RHS-10ATC with an additional features of BUILT-IN CALIBRATION KNOB, has much LIGHTER WEIGHT, and LONGER. Salinity Refractometer is designed for testing the concentration of salt water and brine and used for qualit...


LVOERTUIG Salinity Refractomer Aquarium Optics Refractometer With Auto Temperature Compensation ATC Digital Dual Scale Salinity Meter Hydrometer Specific Gravity For Saltwater Seawater Marine
LVOERTUIG Salinity Refractomer Aquarium Optics Refractometer With Auto Temperature Compensation ATC Digital Dual Scale Salinity Meter Hydrometer Specific Gravity For Saltwater Seawater Marine
By LVOERTUIG
In Stock
$21.99

mpn: 15315337445483, ean: 0697159436165,

4.4 out of 5 stars with 67 reviews
SpecificationsMaterial: aluminium, rubberColor: blackSize(approx): 195 x 40mmMeasure Range: 0-100%(0-10%)Accuracy: 0.001sg(1%)Salinity Proportion: 1.000-1.070sgFeaturesUsed to measure the salinity and specific gravity of the water.Sturdy and light we...


Sinotech Hand Held Brix 0-80% Sugar Refractometer (Single Scales) Rhb0-80
Sinotech Hand Held Brix 0-80% Sugar Refractometer (Single Scales) Rhb0-80
By Sinotech
In Stock
$59.99

mpn: RHB0-80 (low cost), ean: 0799804054806,

4.9 out of 5 stars with 79 reviews
The traditional brix refractometer is specially designed to work with sugar related liquids such as low sugar fruits and vegetables juices, maple sap or for synthetic or semi-synthetic coolants(for machining and grinding coolants), soft drinks and wi...


DealMux Jardin Salinity and Specific Gravity Plastic Shell Ocean Hydrometer, Clear
DealMux Jardin Salinity and Specific Gravity Plastic Shell Ocean Hydrometer, Clear
By DealMux
In Stock
$12.75

mpn: DLM-B00ARBAMGY, ean: 6886872339646,

4.5 out of 5 stars with 12 reviews
Durable clear plastic hydrometer. Accurate and easy to read. Designed for use in warm water aquariums (18-28C). Readings are temperature-corrected & accurate to +/- 0. 002 specific gravity units which range from 1. 010 - 1. 030 specific gravity. 16-4...


Clinical Refractometer with ATC, Tri Scale Serum Protein/Urine Specific Gravity/Refractive Index, for Veterinary Dog Cat Pet
Clinical Refractometer with ATC, Tri Scale Serum Protein/Urine Specific Gravity/Refractive Index, for Veterinary Dog Cat Pet
By Gain Express
In Stock
$23.90
$19.12
You Save: 20%

mpn: REC-200ATC, ean: 0600316548588,

4.6 out of 5 stars with 56 reviews
Clinical Refractometer measure and test urine specific gravity, plasma or serum protein, and refractive index for Veterinary tool and pet owner. Also, it's an economic & ideal tool for athletes, wrestlers, and other sports competitors to pretest hyd...


Supreme Hydrometer
Supreme Hydrometer
By Danner
In Stock
$34.88

mpn: 01501 - HYDROMETER, ean: 0025033015012,

4.8 out of 5 stars with 101 reviews
For Saltwater and Brackish Water Aquariums.Includes Salinity and specific gravity scales.Easy to read and use. Durable clear acrylic.Measures the level of salinity in your pond. Readings are temperature corrected. Easy to read and accurate. ...


Automatic Temperature Compensation Sea Water Salt Salinity Refractometer for Aquarium, 0% - 10% & 1.0 to 1.070 S.g. Dual Scale Hydrometer By Adeadvancedoptics
Automatic Temperature Compensation Sea Water Salt Salinity Refractometer for Aquarium, 0% - 10% & 1.0 to 1.070 S.g. Dual Scale Hydrometer By Adeadvancedoptics
By Ade Advanced Optics
In Stock
$22.99
$20.00
You Save: 13%

mpn: RHS-10ATC, ean: 0704405061344,

4.8 out of 5 stars with 29 reviews
Design Lightweight aluminum construction Ergonomic, comfortable & easy operation Anti-slip, rugged body with durable & hygiene smooth aluminum grips Translucent bule background Durable High quality all-aluminum body Value 3 year warranty High quality...


PENSON & CO. Salinity Refractometer for Aquarium, Fish Tank Seawater ATC Hydrometer Dual Scale (1.0 to 1.070 S.G.)
PENSON & CO. Salinity Refractometer for Aquarium, Fish Tank Seawater ATC Hydrometer Dual Scale (1.0 to 1.070 S.G.)
By PENSON & CO.
In Stock
$17.99

mpn: ATSAR0211HT, ean: 0691953033537,

4.0 out of 5 stars with 37 reviews
Measure salt water or salinity of water, ideal for aquariums and marine monitoring. 1. Product (Net) size: Length: 7.68"; Diameter: 1.57"; Weight: 4oz.; 2. Material: Aluminium; Color: Black; 3. Salinity Range: 0-100 ppt (0-10%); Specific Gravity (SG)...


Sinotech Hand Held New Design Beer Brewing Wine Wort 1.000-1.130sg Brix Refractometer with Calibration Knob Rsgn-100atc
Sinotech Hand Held New Design Beer Brewing Wine Wort 1.000-1.130sg Brix Refractometer with Calibration Knob Rsgn-100atc
By Sinotech
In Stock
$30.50

mpn: Sin-3085, ean: 0799804050372,

4.3 out of 5 stars with 59 reviews
RSGN-100ATC is an Upgraded Version of RSG-100ATC With an Additional Features of Buillt-In Calibration Knob, Has Much Lighter Weight, and Longer This Refractometer is Specifically Created for Brewing of Beer Measuring Range: 0-32%Brix; SG: 1.000-1.13...


BioTek Marine Salinity Refractometer
BioTek Marine Salinity Refractometer
By BioTek Marine
In Stock
$35.95

mpn: BTM-REFRACT, ean: 0866836000009,

4.6 out of 5 stars with 79 reviews
Highly accurate and easy to read. The BioTek Marine Refractometer measures "true" seawater salinity levels, instead of just saltwater. This means that it measures usually unaccounted for elements such as calcium and magnesium as well as sodium chlor...


Baoblaze Salinity Refractometer for Seawater and Marine Fish Tank Aquarium 0-100% with Automatic Temperature Compensation
Baoblaze Salinity Refractometer for Seawater and Marine Fish Tank Aquarium 0-100% with Automatic Temperature Compensation
By Baoblaze
In Stock
$44.08
$20.99
You Save: 52%

mpn: e45887472340f684df6d8e9c13e03d2f, ean: 0707335523012,

4.8 out of 5 stars with 106 reviews
Description: - Used to measure, monitor and control the concentration of salt water and brine. - The unique two scale lines can directly read the specific gravity and concentration of the solution. - With automatic temperature compensation ATC 0-30°...


HM Digital PH-80 pH Meter Waterproof PH80 Tester HydroTester
HM Digital PH-80 pH Meter Waterproof PH80 Tester HydroTester
By HM Digital
In Stock
$37.98

mpn: 4334822627, ean: 0647608368806,

4.1 out of 5 stars with 64 reviews
HM Digital PH-80 pH HydroTester, PH80 Tester Meter, includes one pH 7 powder packet (makes 100 ml of solution when mixed with distilled water) and a small pack of storage solution. Authorized HM Digital Distributor - eSeasongear Brand new meter with ...


Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 Ppt with Automatic Temperature Compensation
Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 Ppt with Automatic Temperature Compensation
By Agriculture Solutions
In Stock
$19.99

mpn: WL0020-ATC, ean: 0710824285742,

4.5 out of 5 stars with 148 reviews
Refractometer for seawater and marine fishkeeping aquarium 0-100 ppt Details : This optical refractometer (salinity meter) has scales in the range of 0 - 100 ppt(0 - 10 %). The reading resolution is 1 ppt. It is designed for the measurement of se...


ATC Dual scales 0-10% (1.000-1.070sg) brine Salinity Refractometer Seawater tester Rhs-10atc
ATC Dual scales 0-10% (1.000-1.070sg) brine Salinity Refractometer Seawater tester Rhs-10atc
By Sinotech
In Stock
$21.08
$15.99
You Save: 24%

mpn: RHS-10ATC, ean: 0799804054363,

4.2 out of 5 stars with 23 reviews
Specification: One scale checks the NaCl levels with the range of 0-100 ppt (with 1 ppt scale divisions) and the other scale gauges Specific Gravity with a range of 1.000 to 1.070 (±0.001 accuracy). Both enables the direct determination of salinity...


Anura Lab Quality Pocket Size Digital Salinity, TDS EC & Temperature Meter Tester For Drinking Water | Salt Water Pools & Spas | Freshwater Aquariums | Up To +/- 1% Readout Accuracy
Anura Lab Quality Pocket Size Digital Salinity, TDS EC & Temperature Meter Tester For Drinking Water | Salt Water Pools & Spas | Freshwater Aquariums | Up To +/- 1% Readout Accuracy
By Anura
In Stock
$140.00
$110.00
You Save: 21%

mpn: EC60, ean: 0784672854580,

4.7 out of 5 stars with 65 reviews
Anura products are built to last. EC60 is easy to use. Water-proof and dust-proof, a IP67 rated body. RoHS compliant. Able to replace the conductivity cell, this means you can save money with a replaceable conductivity cell instead of buying a new te...


Hikari AccuProbe Aquarium Hydrometer, Full
Hikari AccuProbe Aquarium Hydrometer, Full
By HIKARI
In Stock
$11.89
$7.99
You Save: 33%

mpn: 96010, ean: 0015568985393,

4.2 out of 5 stars with 77 reviews
Wide Range Specific Gravity Meter For Marine Aquarium Use. Automatically collects perfect sample size by leveling off sample at top of dam."Dry Hands" design avoids contamination of aquarium or water sample. Accurate to 0.001 specific gravity and sal...


Sinotech Hand Held Brix 0-90% Sugar Refractometer (Single Scales) Rhb0-90
Sinotech Hand Held Brix 0-90% Sugar Refractometer (Single Scales) Rhb0-90
By Sinotech
In Stock
$59.99

mpn: RHB0-90 (low cost), ean: 0799804054813,

4.9 out of 5 stars with 83 reviews
The traditional brix refractometer is specially designed to work with sugar related liquids such as low sugar fruits and vegetables juices, maple sap or for synthetic or semi-synthetic coolants(for machining and grinding coolants), soft drinks and wi...


saltwater Hydrometer & Digital Thermometer aquarium NEW
saltwater Hydrometer & Digital Thermometer aquarium NEW
By Aquarium Supplies
In Stock
$17.70

mpn: R10 wen du zhi zhen bi zhong ji, ean: 4719857440414,

4.8 out of 5 stars with 32 reviews
Description: 1. Easy to use. 2. Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums. 3. Hydrometer measures specific gravity. 4. Need it for raising brine shrimp. CONTINUOUS USE:1.Submerge...



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