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Aquarium Hydrometers - 8 - Huge Savings! Save up to 18%


Huge Savings! Up to 18% off on Aquarium Hydrometers at Naj Blog. Top brands include American Marine, Sinotech, Zoo Med, & Anura. Hurry! Limited time offers. Offers valid only while supplies last.



Pinpoint Orp Controller
Pinpoint Orp Controller
SKU: #11010012
In Stock
$194.90

sku: 11010012, mpn: ORP CONTROLLER,

The accuracy and reliability of Pinpoint Monitors is now available in a pH and ORP Controller. Large LED display and simple calibration make these the controllers of choice for either ozone or CO2 applications. Units include probe and calibration flu...


Sinotech Hand Held Antifreeze Glycol Battery Refractometer Rha-300atc with Ce Certificate
Sinotech Hand Held Antifreeze Glycol Battery Refractometer Rha-300atc with Ce Certificate
In Stock
$141.99

mpn: Sin-3056, ean: 0799804050266,

RHA-300ATC Models are Equipped With °F Unit System. 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 Sol...


Sinotech Hand Held Two Scales Brix 0-80% Refractometer Rhb0-80
Sinotech Hand Held Two Scales Brix 0-80% Refractometer Rhb0-80
In Stock
$360.00

ean: 0799804050228,

RHBO-80 Brix Refractometer Combines Two Separate Brix Ranges in 1 Instrument and Covers a Total Measuring Range of 0-80%. Range 1 Covers 0-50% and Range 2 Covers 50-80%, Allowing This Instrument to be Used on Many Products and Processes. Measuring Ra...


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

ean: 0799804050747,

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 batter...


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

mpn: ZGRS-28ATC, ean: 0799804050754,

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 batter...


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
In Stock
$197.45

ean: 0799804050457,

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...


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

mpn: RHAN-200ATC, ean: 0799804050488,

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 percenta...


Sinotech Digital Vibration Meter Sk63b
Sinotech Digital Vibration Meter Sk63b
In Stock
$283.99

ean: 0799804052970,

Vibration tester, Bearing Condition Detector, Machine Condition Checker, Vibration data collector, Field Balancer Analyzer, vibchecker, vib-cheker, vibration checker Vibration meter (also called vibration severity) uses Piezoelectric Accelerati...


Special Fogger Value Pack - Includes Zoo Med Fogger, Humidity & Temp Controller & Gauge! (Value Pack)
Special Fogger Value Pack - Includes Zoo Med Fogger, Humidity & Temp Controller & Gauge! (Value Pack)
In Stock
$229.99

ean: 0640052207592,

Special Fogger Value Pack - Includes Zoo Med Fogger, Humidity & Temp Controller & Gauge! (Value Pack). Compact ultrasonic fogger increases your tank's humidity. Adjustable fog output control.. Comes ready to operate right out of the box. Includes 1-l...


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
In Stock
$170.00
$140.00
You Save: 18%

mpn: EC60, ean: 0784672854580,

4.0 out of 5 stars with 31 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...



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