Measuring

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206 items found. Showing items 97 to 128 .

    …accurately measure the Alkalinity concentration in saltwater aquariums! Every test kit batch is certified and approved by Aquaforest ICP-OES testing reference solutions. Recommended Alkalinity Level - 7dKH to 8dKH   Aquaforest marine test kits are designed to quickly and accurately measure the…

    $12.99

    …ClorAm-X as needed to eliminate and control ammonia at the regular dosage rate for each 1 mg/L, or fraction therefore of measured total ammonia or for each 0.85 mg/L of measured total ammonia-nitrogen. Contradictions: Do not use with permanganate-based or chlorite-based treatments. Nessler's total…

    Starting at:
    $4.59

    …Dual Electrical Conductivity Monitor is ideal for RO systems, where you may want to monitor an input and output reading from a filtration system. Measures EC (Electrical Conductivity) in µS (micro-Siemens) Stronger, water-resistant casing Digital Calibration Backlit Display XL LCD Display Waterproof…

    $59.95

    …solution and when applied to seawater, measurements are not accurate. The SAL-1700 is specifically calibrated to measure the specific gravity of seawater as opposed to a brine or sodium chloride only solution which results in more accurate measurements.  Factory Calibrated Platinum Electrode…

    $69.99

    The SM-1 Single Inline TDS Meter from HM Digital measures the TDS of a single water line. This is a great tool to monitor the TDS of your reverse osmosis system. Common monitoring locations include pre-system, post membrane or post DI stage. This unit features a digital display and comes with a 1/4"…

    $24.99

    …Salinity Testing Hanna Instruments HI98319 Marine Salinity Tester measures electrical conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are measured, and then using the temperature reading, automatically compensated and…

    $69.00

    …Calcium to help ensure the growth of large and small polyp stony corals as well as coralline algae Extra Trace Elements to provide an additional measure of vital nutrients Extra Vitamins to ensure vigorous growth and survival of corals, anemones and other invertebrates in a captive environment Metal…

    Starting at:
    $62.99

    …that will give the electronic checker the ability to make repeatable measurements time after time. Similar measurement devices are used by labs and large-scale testing facilities for their dependable and precise measurements.   Dedicated to a single parameter Instead of a single unit doing…

    $49.95

    …bacterial strains that diminish Cyanobacteria's food source Reef-safe and does not alter nutrient composition of tank Dose weekly for preventative measure Contains no antibiotics Will not affect biological filtration   Cyano Clean’s performance can be considerably enhanced when utilized as a…

    Starting at:
    $18.99

    Features: Measures pH and Temperature Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap Waterproof housing (IP-67 rating) Simultaneous temperature display Measurement Range: 0-14 pH Digital automatic calibration (one…

    $79.99

    …or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery.  Range:0.00 to 3.00 ppm NH3-N Resolution: 0.01 ppm Measurement Method: Colormetric Accuracy: ±0.05 ppm (mg/L) ±5% of reading @ 25°C Light Source:Photodiode @470…

    $49.95

    …your hand or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery. Range:0 to 500 ppb Resolution: 1 ppb Measurement Method: Colormetric Accuracy: ±5 ppb ±5% of reading Light Source:Photodiode @525 nm Light Detector:…

    $49.95

    …or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery.  Range:0.00 to 3.50 ppm (mg/L) Resolution: 0.01 ppm (mg/L) Measurement Method: Colormetric Accuracy: ±0.03 ppm (mg/L) ±3% of reading Environment: 32 to 122° F(0 to…

    $49.95

    …accurately measure the Magnesium concentration in saltwater aquariums! Every test kit batch is certified and approved by Aquaforest ICP-OES testing reference solutions.   Recommended Magnesium Level - 1260ppm - 1500ppm   Aquaforest marine test kits are designed to quickly and accurately measure the…

    $17.99

    …water after the measurement process. Note Nitrite concentrations affect the nitrate measurement. Therefore, the nitrite concentration should also be measured and, if required, the nitrate results should be corrected in relation to the table before carrying out the nitrate measurement. High nitrite…

    $27.59

    …correctly. That's where the Tropic Marin Hydrometer comes in. The Tropic Marin High Precision Hydrometer provides an exact and reliable measurement of specific gravity, and it never needs to be re-calibrated, so it's a perfect reference device for calibrating other equipment. High precision…

    $31.25

    …(protein skimming) and UV sterilization. SHAKE VIGOROUSLY before use. Measure Aquarium Solutions Liquid PraziPro at the rate of one (1) teaspoon per 20 gallons of water to be treated. (one (1) fl. oz. per 120 gallons) Measure Pond Solutions Liquid PraziPro at the rate of one (1) teaspoon per 32…

    Starting at:
    $4.59

    …of rock to hide the sensor in your aquarium. Now you can monitor light 24/7 and never see the sensor! Measures Actual PAR – The Light Corals and Plants Use The Apex with the PMK measures actual PAR. PAR stands for Photosynthetically Active Radiation. This is the light from 400 to 700 nanometers…

    $299.95

    Increased Accuracy for LED Lighting Measurements! The Smart Quantum SQ-520 PAR Sensor is a USB powered sensor that will hook up to any PC or MAC allowing you to use your personal computer instead of an expensive dedicated monitor with the included 15 foot long USB cable. Hooking a sensor up directly…

    $438.00

    …the KH Director utilizes lab grade quality test standards to provide precise results every time. Lab-grade KH measurement with 0.1° dKH accuracy Adjustable test sample volume Measurements per day adjustable KH value display capabilities* Higher accuracy and safety provided by additional valves…

    $849.90

    …the KH Director utilizes lab grade quality test standards to provide precise results every time. Lab-grade KH measurement with 0.1° dKH accuracy Adjustable test sample volume Measurements per day adjustable KH value display capabilities* Higher accuracy and safety provided by additional valves…

    $849.90

    …all Underwater Lighting Measurements! Measure and store the PAR (photosynthetically active radiation) readings of your reef tank to ensure the healthy growth of your inhabitants. Handheld meter with large, easy to read LCD display Records reading for review Record measurement in Automatic mode or…

    $59.99

    …repeatable alkalinity tests. The two-part reagent system allows for more precise reading than competitors while holding a tight range of error.  Measurement Range of 01. - 20 dKH Accuracy of 0.1 dKH Up to 100 tests @ 0.2dKH resolution or 50 tests @ 0.1dKH resolution Conversion Table Included    …

    $21.81

    …if chlorine and chloramines exist in your water. Hanna Test Kit Free Chlorine Manual Range: 0.00 to 2.50 ppm (mg/L) Chemical Method: DPD Measurement Method: Colormetric Smallest Increment: .5 mg/L Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting…

    $21.00

    Bulk RO Tubing Compatible with all Bulk Reef Supply RODI Systems and other RO(DI) systems that utilize 1/4" Polyethylene Tubing. The 1/4" measurement is the outside diameter of the tubing and will work with all 1/4" Push-Connect fittings.   Our 500 Foot Spool comes as a complete continuous 500-Foot…

    $99.99

    Bulk RO Tubing Compatible with all Bulk Reef Supply RODI Systems and other RO(DI) systems that utilize 1/4" Polyethylene Tubing. The 1/4" measurement is the outside diameter of the tubing and will work with all 1/4" Push-Connect fittings.   Our 500 Foot Spool comes as a complete continuous 500-Foot…

    $99.99

    …kits. Healthy coral growth depends on providing a proper balance of Calcium, Alkalinity and Magnesium. Red Sea Calcium Pro Test Kit accurately measures calcium levels. Calcium Kit includes: 75 tests Analytical grade glass vials Easy-to-use, high precision Titrator Affordable reagent refills   Red…

    $34.99

    …kits. Healthy coral growth depends on providing a proper balance of Calcium, Alkalinity and Magnesium. Red Sea Alkalinity Pro Test Kit accurately measures alkalintiy levels. KH/Alkalinity Kit includes: 75 tests Analytical grade glass vials Easy-to-use, high precision Titrator Affordable reagent…

    $34.99

    …Healthy coral growth depends on providing a proper balance of Calcium, Alkalinity, and Magnesium. Red Sea Magnesium Pro Test Kit accurately measures magnesium levels. Magnesium Kit includes: 100 tests Analytical grade glass vials Easy-to-use, high precision Titrator Affordable reagent refills.…

    $34.99

    The HI774 Ultra Low Range Phosphate Checker® is a cost-effective way to measure phosphate in marine systems, including reef tanks. Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or small-polyp stony.…

    $49.95

    …Mounting Height* - 8" Max Reach** - 17"  Min Reach** - 11" Tank Thickness - 0.39" - 0.78" (10 - 20mm)   *Height is measured to the bottom of the Atlantik fixture **Reach is measured to the center of the Atlantik fixture    What's Included? 2x Aluminum Vertical Brackets 2x Aluminum Light Support…

    $125.00 $90.00

    …Specifications: Range: 0.0 to 14.0 pH Resolution: 0.1 pH Accuracy: +/-0.2 pH pH set point 5.5 to 9.5 pH Visual LED pH Alarm: active when measurement is higher or lower than set point pH Probe: MA911B/2 (included)  pH Electrode: Double junction pH electrode with 2 meter cable (BNC connector) …

    $130.99