Salinity Refractometer for Aquarium Dual Scale Salinity Tester 0-100‰ & 1.000-1.070 Specific Gravity Saltwater Tester Brine Refractometer Hydrometer with ATC Function

  • DUAL SCALE - Salinity Refractometer measures on 2 scales: Specific Gravity 1.000 to 1.070 (D 20/20) and 0-1000PPT, which allow to get the both results at just one testing.
  • EASY TO USE - The aquarium refractometer need few sample, put 2-3 drops on prism and towards light source, you can get the the accurate readings quickly from eyepiece.
  • WIDELY APPLICATION - Brine refractometer can be used for measuring salt water, salinity of water and seawater, ideal for monitoring aquariums, Marine Fishing Keeping, Agricultural, lab experiment and Educational purposes.
  • ACCURATE & AFFORDABLE - Salt water refractometer features ATC (Automatic temperature compensation) function to ensure get consistently accurate reading. Easy to operate than traditional hydrometers and more affordable than digital refractometer.
  • DURABLE & PORTABLE - Saline (brine) refractometer is made of aluminium and rubber, non-rust, anti-abrasion and durable for long time use. Comes with plastic storage box, small screwdriver and cleaning cloth, easy to organize and carry with.
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Watris Veiyi Pool Salt Tester, 5 in 1 Salinity/Temp/EC/S.G/TDS Meter, Digital Pool Water Tester, High Accuracy Salinity Meter for Swimming Pool, Aquarium, Saltwater

  • 【5-in-1 Water Quality Tester】Salinity Meter, EC Meter, TDS , S.G, and Temperature tester. Salinity measurement range: 10.1~200.0ppt or 0.00-25.00%..
  • 【High Precision】The pool salt tester has a sensitive electrode sensor and a high sensitivity probe to ensure fast and accurate response..
  • 【Backlight Display】The water tester has a backlight LCD display that can display the measurement results clearly and intuitively. Simple operation and accurate measurement..
  • 【Easy To Use】Just dip electrode into the saltwater pool or take a cup of sample for measurement, and then observe the results. The HOLD button locks the result for easy viewing..
  • 【Wide Applications】This pool tester can not only detect the salt content of drinking water, swimming pool, and aquarium, but also can be used in seawater, marine, hydroponic, ect..
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Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation

  • Measure salt water or salinity of water, ideal for aquariums and marine monitoring..
  • Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand..
  • Features automatic temperature compensation..
  • Comes with hard case, dropper, screwdriver, user manual and cleaning cloth..
  • The main part is made of chromium, it's very durable..
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RCYAGO Dissolved Oxygen Meter with Electrode Filling Fluid

  • ...tion is still inaccurate, and the membrane sleeve needs to be replaced..
  • Adopts the digital screen display with backlight, which is more clear and convenient to read data. Auto power-off in 8 minutes if not using it. Low battery indication. Oxygen solubility will be affected by temperature, atmospheric pressure, and salinity. Our instrument with temperature compensation can meet normal use..
  • It is very suitable for measuring the dissolved oxygen level and temperature in a wide range of aquariums, swimming pools, ponds, freshwater aquaculture, marine aquaculture, school teaching experiments, laboratory sterile environment, aquaculture, scientific research, and other fields..
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API HIGH RANGE PH TEST KIT 160-Test Freshwater and Saltwater Aquarium Water Test Kit 150-watt halogen bulb

  • Contains one (1) API HIGH RANGE PH TEST KIT 160-Test Freshwater and Saltwater Aquarium Water Test Kit, including 1 bottle of testing solution, 1 color....
  • Helps monitor pH and prevent invisible water problems that can be harmful to fish and cause fish loss.
  • Accurately reads pH range 7.4 - 8.8, ideal for Goldfish, Marine, and African Cichlids..
  • Because different geographies have different tap water conditions, and different fish need different pH levels to be healthy, API helps measure pH....
  • Use for weekly monitoring and when water or fish problems appear.
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API GH & KH TEST KIT Freshwater Aquarium Water Test Kit

  • Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 glass test tubes with cap.
  • Helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish loss.
  • Accurately measures GH & KH in freshwater aquariums.
  • Water hardness is a measure of the dissolved mineral content of water and should match fish natural habitat to prevent fish stress and keep them healthy.
  • Use for weekly monitoring and when water or fish problems appear.
  • Front of package indicates “for FRESH WATER” because this is the most common use of this product, but instructions include ranges for marine and brackish aquarium water. So this product does not need a warning and it can be used if they wish to..
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Rockville Pair RKL65MBW 6.5" 700W Marine Boat Speakers W/Led+Black/White Grilles

  • Package Includes (2) Pair Rockville RKL65MBW 6.5" 700w Marine Boat Speakers w/LED+Black/White Grilles. (1) Rockville MS10LB 10" 2400 Watt Black Marine/Boat 10" Free Air Subwoofer with LED. (1) Rockville DBM50 4000 Watt/980w RMS 5 Channel Marine/Boat Amplifier Amp+Mic. (1) Rockville RMWK4 4 AWG Gauge Waterproof Marine Amplifier/Amp Install Wire Kit. (2) Rockville MRCA25 25 Foot Twisted Pair Marine RCA Cable 100% Copper, Split Pin.
  • Features of RKL65MBW: Pair Rockville RKL65MBW 6.5 2-Way 700 Watt Marine Boat Speakers with LED Lights. CEA Compliant Power Ratings. Power Rating: 350 Watts Peak /85 Watts RMS Per Speaker. Total Power: 700 Watts. Beat sync LEDs flash to the rhythm of the music. You can select either red or blue color LEDs on the wire harness. No extra installation for the LED. It gets a power signal through your speaker wire..
  • Features of MS10LB: Rockville MS10LB 10" Marine Free Air Subwoofer with LED (Black). Free air subwoofer does not require any enclosure. Max Power: 2400 Watts. RMS Power: 600 Watts. Polypropylene cone with Rubber edge. 2.0" 4 Layer dual voice coil. Molded ABS plastic basket made with a special blend that is wate....
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4 Rockville WB65KLED 6.5\ 600w Metal Marine Wakeboard LED Tower Speakers+Amp+Mic

  • Package Includes: (2) Pair Rockville RKL65MBW 6.5" 700w Marine Boat Speakers w/LED+Black/White Grilles. (1) Rockville ATOM S20 Marine Bluetooth Amplifier 1600w 4 Channel/Volt Meter+PA Mic. (1) Rockville RMWK4 4 AWG Gauge Waterproof Marine Amplifier/Amp Install Wire Kit. (1) Rockville MRCA25 25 Foot Twisted Pair Marine RCA Cable 100% Copper, Split Pin.
  • Features of RKL65MBW: Pair Rockville RKL65MBW 6.5” 2-Way 700 Watt Marine Boat Speakers with LED Lights. CEA Compliant Power Ratings. Power Rating: 350 Watts Peak /85 Watts RMS Per Speaker. Total Power: 700 Watts. Beat sync LED’s flash to the rhythm of the music. You can select either red or blue color LED’s on the wire harness. No extra installation for the LED. It gets a power signal through your speaker wire..
  • Features of ATOM S20: Rockville ATOM S20 1600 Watt Peak/440 Watt Dyno-Certified RMS 4 Channel Class AB Marine Stereo Amplifier With Bluetooth. Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker, RF faostgte etc). 2 Ohm: 110 Watts x 4 Channel 003c1% THD+N @ 14.4 Volts. 4 Ohm: 70 Watts x 4 Channel 003c1% THD+N @ 14.4 Volts. 4 Ohm Bridged: 220 Watts x 2 Channel 003c1% THD+N @ 14.4 Volts..
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YCKYIGO Salt Water Pool Tester Large Range 7 in 1 Multi-Parameter Tester for Salt Swimming Pool and Spa

  • 【Wonderful Helper for Pool Salinity Measurement】This salinity meter is perfect for testing the salinity of swimming pools. It helps you to detect the salt level in your salt system. Scale range: 0~9999 ppm/10.0~200 ppt and 0.00-25.00%..
  • 【Detects Free Chlorine Levels】The ORP value is a measure of the oxidative power or sterilization strength in water pool salt. The higher the ORP value in water, the stronger the oxidative power and sterilization ability. The ORP's can reflect the residual chlorine (FAC) levels in the Saltwater pool..
  • 【Highly Sensitive PH Probe】A low pH means the water is acidic, which can be corrosive to pool equipment and pool surfaces. It may also cause skin and eye irritation. A high PH value can greatly reduce the effectiveness of chlorine and cause the water to become cloudy. To avoid problems, it’s important to try and keep it within the ideal range of 7.4–7.6. This PH test pen will do the job perfectly..
  • 【Platinum Electrodes for TDS】Total Dissolved Solids (TDS) is a measurement of all dissolved solids in pool water. The higher the TDS reading, the harder it is to maintain clea....
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