Aquarium Hydrometers - Huge Savings! Save up to 20%


Huge Savings! Up to 20% off on Aquarium Hydrometers at Gerdas Animal Aid. Top brands include Gain Express, AmyDong yoga pants, Fashion Life, SODIAL, TOOGOO(R), Ray-JrMALL, & Sinotech. Hurry! Limited time offers. Offers valid only while supplies last.



Clinical Refractometer with ATC Tri-Scale-Serum Protein 2-14g/dl Urine Specific Gravity 1.000-1.060SG Veterinary Cat Dog Cow Horse Sheep
By Gain Express
In Stock
$24.90
$19.92
You Save: 20%

mpn: REC-200ATC, ean: 0600316548588,

4.4 out of 5 stars with 31 reviews
Clinical Refractometer measure and test urine specific gravity, plasma or serum protein, & refractive index for Veterinary tool and pet owner.Features:Tri-Scale measure Serum protein, Urine specific gravity, and Refractive indexAuto Temperature Compensation (ATC), rest easy that your measurements are always accurate regardless of temperature variationUses simple calibrations steps onlySoft rubber eyepiece for comfortable viewingCushioned w/ soft and comfortable non-slip rubberized grip,


AmyDong Women's Strapless Elastic Boob Bandeau Wrapped Tube Bra Lingerie Chest Wrap Tops
By AmyDong yoga pants
In Stock
$0.54

mpn: 539526986, ean: 0034649474762,

4.1 out of 5 stars with 29 reviews
Size GuidelineSize:S ----Bust:65-90cm/25.6-35.4'' ----Front Length:24cm/9.4'' Size:M ----Bust:69-94cm/27.1-37'' ----Front Length:25cm/9.8'' Size:L ----Bust:73-98cm/28.7-38.5'' ----Front Length:26cm/10.2'' Size:XL ----Bust:77-102cm/30.3-40.1'' ----Front Length:27cm/10.6' Product Details Material:Polyester, Soft and Cozy Style: Fashion, Simple and charming style Match: Perfect to match you favorite jeans, pants etc. Occasion: Street fashion, Party activities, Daily leisure. Season: Summer,


Fish Tank Suction Cup Thermometer Water Temperature L 0-50 Celsius Aquarium Marine Glass
By Fashion Life
In Stock
$2.15

ean: 0889577171371,

4.0 out of 5 stars with 41 reviews
Description: Aquarium thermometer for fish tank usage. Look no further, buy instantly! Standard: length 15 cm. Measure range: 0-50 degree centigrade ( with suction cup ). 1 x Aquarium thermometer.Aquarium thermometer for fish tank usage.. Look no further, buy instantly.


Fashion Life Aquarium Fish Tank Thermometer Temperature Sticker Digital Dual Scale Stick-On Durable
By Fashion Life
In Stock
$1.42

mpn: um88, ean: 0889577171081,

4.3 out of 5 stars with 7 reviews
Brand new with high quality. Stick on the outer surface of fish tank. Simple to use and convenient to read. Look no further, buy instantly. Dimension: 13 cm of length, 1.8 cm of width. Measurement range: Celsius degree18-34¡ãC, Fahrenheit degree 64-93¡ãF. The thermometer changes its color according to the surrounding temperature. If the surrounding temperature is 27¡ãC, then the background of scale mark 27¡ãC will turn colorful and other scale marks remain black. ++ Package included ++


SODIAL(R) Aquarium Glass Float Hydrometer With Thermometer Salt Marine 20cm
By SODIAL
In Stock
$2.78

mpn: 045320, ean: 4894462655771,

4.6 out of 5 stars with 32 reviews
Aquarium Glass Float Hydrometer With Thermometer Salt Marine 20cmProduct DescriptionMaterial:GlassFor Salt Water / Marine AquariumsEasy to useSize:20cm/7.87''''Quantity: 1 PcPackage includes:1 Pc x Aquarium Glass Float Hydrometer With Thermometer Salt Marine''Note:Light shooting and differnent displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is 1-3 cm.Measure both Temperature and Specific Gravity of the water. Green


Aquarium Submersible Glass Thermometer With Suction 14Cm Hydrometer Waterproof Fish Tank Durable
By Fashion Life
In Stock
$1.93

ean: 0889577171180,

4.3 out of 5 stars with 50 reviews
Description: Aquarium and exo terra reptile tank thermometer. Made of high quality glass, clear and easy to read. Stable and durable enough for a long time use. Applicable both on the land and in the water. With strong sucker. Model: AT-03. Size: 14 cm length. Note: with sucker. Package: blister case + cardboard. 1 x Thermometer.Aquarium and exo terra reptile tank thermometer.. Made of high quality glass, clear and easy to read.. Stable and durable enough for a long time use..


TOOGOO(R) Aquarium Glass Float Hydrometer With Thermometer Salt Marine 20cm
By TOOGOO(R)
In Stock
$2.45

mpn: 045320, ean: 4894462681237,

4.8 out of 5 stars with 31 reviews
* TOOGOO is a registered trademark. ONLY Authorized seller of TOOGOO can sell under TOOGOO listings.Our products will enhance your experience to unparalleled inspiration. TOOGOO(R) Aquarium Glass Float Hydrometer With Thermometer Salt Marine 20cmProduct DescriptionMaterial:GlassFor Salt Water / Marine AquariumsEasy to useSize:20cm/7.87''''Quantity: 1 PcPackage includes:1 Pc x Aquarium Glass Float Hydrometer With Thermometer Salt Marine''Note:Light shooting and differnent displays may cause the


Ray-JrMALL Co2 Diffuser Atomizer for Water Plants Dual Suction Cup L Aquarium Plastic Tank Reactor
By Ray-JrMALL
In Stock
$1.95

mpn: RayMALL0666, ean: 0840597130748,

4.1 out of 5 stars with 41 reviews
Description:1. Super diffuse efficiency to get the best CO2 dissolved effect.2. Designed for screw lock on the CO2 tube, no need to worry the tube loose off by the pressure and caused damage.Note: We recommend you to install the atomizer at the bottom of the aquarium to get the best dissolved effect.Color: Black.Size: 5.5 x 4 x 3.5 cm.Material: Plastic.1 x CO2 Diffuser Atomizer.Dimension: 15 x 10 x 4.5 cm ( length x height x width ).. Sponge height: 8 cm.. Sponge diameter: 4.5 cm.. Note:.


Aquarium Fish Tank Lcd Digital Submersible Thermometer Waterproof Immersible Mini Marine
By Fashion Life
In Stock
$2.63

ean: 0889577170909,

4.8 out of 5 stars with 10 reviews
Brand new and high quality. Small and compact. No sensor wire needed. Waterproof. Completely immersible. Temperature range: 0¡ãC - 50¡ãC. Dimension: about 47mm x 28mm x 27mm. LCD size: about 27mm x 13mm. Power: 1 x button battery (not included). ++ Package included ++ 1 X Thermometer.Brand new and high quality.. Small and compact.. No sensor wire needed.. Waterproof..


Women's Silk Lace Stitching Sleeveless Vests, AmyDong Fashion Satin Camisole Plain Strappy Casual Tops Blouse
By AmyDong yoga pants
In Stock
$1.90

mpn: 539526986, ean: 0034649471471,

4.5 out of 5 stars with 58 reviews
Size GuidelineSize: S US: 4 UK: 8 EU: 34 ----Bust: 90cm/35.43'' ----Length: 60cm/23.62'' Size: M US: 6 UK: 10 EU: 36 ----Bust: 94cm/37.01'' ----Length: 61cm/24.02'' Size: L US: 8 UK: 12 EU: 38 ----Bust: 98cm/38.58'' ----Length: 62cm/24.41'' Size: XL US: 10 UK: 14 EU: 40 ----Bust: 102cm/40.16'' ----Length: 63cm/24.80'' Product Details Material:Polyester, Soft and Cozy Style: Fashion, Simple and charming style Match: Perfect to match you favorite jeans, pants etc. Occasion: Street fashion,


Sinotech Hand Held Lighted Clinical Refractometer Zgrc-300atc Black Rubber
By Sinotech
In Stock
$41.00

mpn: Sin-3077, ean: 0799804052567,

4.4 out of 5 stars with 29 reviews
Specification: Measuring Range: 2-14g/dl, 1.000-1.060RI Dog,1.000-1.060RI Cat Minimum Division: 0.2g/dl, 0.001RI, 0.001RI Accuracy:±0.2g/dl, ±0.001RI, ±0.001RI ATC CompensationRange: 10°C~30°C (50°F~86°F) With The Built-in Light Source Heavy-duty and Lightweight With Its Aluminum Construction Power Require: 3 “ '' Button Cell (1.5V*3) Battery Life: More than 100hours Light Source: White LED Dimension: 27x40x160mm Accessories included: 1pc Pipette ***Operations man


Sinotech Hand Held Antifreeze Refractometer Rhan-200atc Built-in Calibration Knob 6pcs Per Lot
By Sinotech
In Stock
$197.95

mpn: RHAN-200ATC, ean: 0799804050488,

4.6 out of 5 stars with 24 reviews
RHAN-200ATC is an upgraded version of RHA-200ATC with an additional features of BUILT-IN CALIBRATION KNOB, has much LIGHTER WEIGHT, and LONGER Product's Instroduction: The models have only one unit system: °C. With the indication of the percentage we may know the freezing point of either ethylene glycol or propylene glycol based cooling systems. And they can also be used to test the concentration of ethylene glycol or propylene glycol in antifreeze liquids. The RHAN-200ATC has Automati


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

ean: 0799804050457,

4.4 out of 5 stars with 56 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 quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand) of salt in water. One scale checks the NaCl levels with the range of 0-100 ppt (wit


Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-28atc 6pcs Per Lot
By Sinotech
In Stock
$236.95

mpn: ZGRS-28ATC, ean: 0799804050754,

4.7 out of 5 stars with 15 reviews
ZGR series has its own light source. With the built-in light source, it makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it also can use the outside light source to test. It is convenient to replace the batteries when they were use out.These models aredeveloped for the measuring of salt in brine and prepared food solution. The ZGRS-28ATC has Automatic Temperature Compensation System. Specification: Measuring Range: Salinity: 0-28% Minimum Division:


Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-10atc 6pcs Per Lot
By Sinotech
In Stock
$236.45

ean: 0799804050747,

4.3 out of 5 stars with 58 reviews
ZGR series has its own light source. With the built-in light source, it makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it also can use the outside light source to test. It is convenient to replace the batteries when they were use out.These models with high resolution scale of 0.1% is developed for low concentration use. It can be used to measure the low concentration of salt in brine and prepared food solution and check salt content. The ZGRS-10ATC has


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 34 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: 1.000-1.130 Minimum Division: 0.2%Brix; 0.001sgATC CompensationRange: 10°C~30°C (50°F~86°F)Test Beer Brewing Wine Wort. Measuring Range: 0-32%Brix; SG: 1.000-1.130. Made with the highest and finest quality of aluminum & rubber that makes it lightweight.


Sinotech Hand Held Lighted Salinity 0-10%(0-100ppt) Aquarium Refractometer Zgrs-10atc
By Sinotech
In Stock
$37.00

mpn: ZGRS-10ATC, ean: 0799804051218,

4.1 out of 5 stars with 59 reviews
ZGR Series Has its Own light Source. With the built-in light Source, it Makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it Also Can use the outside light Source to testSalinity Refractometer is Designed for Testing the concentration of salt water and brine and Used for quality control in research and clinical laboratories and marine industry. Its Scale provides a direct reading of the specific gravity and concentration (part per Thousand) of salt in wate


Sinotech Hand Held Lighted Antifreeze Coolant Refractometer Zgra-300atc
By Sinotech
In Stock
$37.00

mpn: Sin-3074, ean: 0799804051232,

4.9 out of 5 stars with 28 reviews
ZGR Series Has its Own light Source. With the built-in light Source, it Makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it Also Can use the outside light Source to testThe Models Have only 1 Unit system: °F. With the indication of the temperature Wemay know the freezing Point of either ethylene glycol or propylene glycol based cooling systems.It Can be Used for checking the strength of electrolyte solution batteries. The Model Has Automatic Temperature


Sinotech Hand Held Lighted Brix 58-92% Honey Refractometer Zgrb-92atc
By Sinotech
In Stock
$38.90

mpn: ZGRB-90ATC, ean: 0799804051201,

4.9 out of 5 stars with 16 reviews
ZGR Series Has its Own light Source. With the built-in light Source, it Makes more convenient to use when in a Dark or Dim room or when doing wide-field work. And it Also Can use the outside light Source to test. It is convenient to replace the batteries when they were use out. The Model is same With the Model RHB-92 to test the sugar solution which Has High sugar contents. With 1 Scale, The ZGRB-92ATC Has Automatic Temperature Compensation System.Measuring Range Brix: 58-92%Brix Baume: 38Be'-43


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,

4.5 out of 5 stars with 16 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, Reamsian Bodily Fluids (Per The Reams Biological Theory of Ionization), Maple Sap or For Synthetic or Semi-synthetic Coolants, Soft Drinks And Wine (for Machining and Grinding Coolants, Please Consult The Technical Data Sheet for Appropriate Concentr



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