Water Quality Testing

Keep your fish healthy by maintaining your water quality. We have meters and kits to test a variety of parameters, including dissolved oxygen (D.O.), pH, ORP, alkalinity, nitrite/nitrate, chlorine and more.

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  1. ProDSS Handheld Multiparameter Instrument

    ProDSS Handheld Multiparameter Instrument

    From: $13.99

    To: $7,332.97

    The ProDSS Portable Digital Sampling System is designed for use in demanding field applications such as surface water, groundwater, and aquaculture. Learn More
  2. Point Four Tracker TGP Meter

    Point Four Tracker TGP Meter

    From: $34.99

    To: $4,566.97

    The Pentair Aquatic Eco-Systems Point Four Tracker provides measurements for TGP (mmHg or % saturation), ΔP, barometric pressure (mmHg) and temperature (ºC).

    Increasing water temperatures, injection of air in water, algal blooms or pressurized pumping can result in gas supersaturation. This may lead to bubble trauma or sub-lethal toxicological problems for aquatic species. The TGP probe provides a rapid and accurate measurement of total dissolved gas pressure.

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  3. EcoSense ORP15A ORP Temperature Pen Tester

    EcoSense ORP15A ORP Temperature Pen Tester

    From: $26.29

    To: $316.97

    The YSI® ECOSENSE® ORP15A pen-style meter takes absolute and relative ORP readings from -1,100 to +1,100 mV with this affordable instrument.

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  4. EcoSense EC30A Conductivity Pen

    EcoSense EC30A Conductivity Pen

    From: $19.99

    To: $167.98

    The YSI® EcoSense® EC30A pen-style meter measures conductivity, total dissolved solids and temperature.

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  5. EcoSense pH100A pH/Temp Meter

    EcoSense pH100A pH/Temp Meter

    From: $54.99

    To: $411.98

    The YSI® EcoSense® pH100A measures pH and temperature (ORP requires separate probe) quickly and accurately. The electrode offset recognition functiondisplays electrode efficiency and indicates when it is time to replace the pH electrode. Features include internal buffer recognition, auto/manual temperature compensation and a large LCD display that simultaneously displays pH or mV and temperature (ºC only). Electrodes with 3' (1 m) cables are available in pH or combination pH/mV. Two-point pH calibration. Cables are waterproof over their whole length. 9V batteries included. Measures 7" x 3". Order meter and probe separately. One-year warranty on meter, six months on probes. Calibration solutions sold separately.

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  6. EcoSense ODO200 Handheld

    EcoSense ODO200 Handheld

    From: $39.99

    To: $1,124.97

    The EcoSense® ODO200 handheld dissolved oxygen meter uses optical technology and provides the most accurate data in the most affordable format. Features an easy-to-use interface, one-hand operation, IP67 waterproof case, and low cost of ownership over the life of the product. The ODO200 simultaneously measures dissolved oxygen % and mg/L (optical) temperature. One-year warranty on meter, cables and sensor cap.

    • Automatic temperature compensation

    • Manual input for salinity and pressure compensation

    • Low battery indicator with 100 hour battery life

    • Auto shutoff function after 30 minutes of inactivity

    • 50 data set reviewable memory Optical benefits include

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  7. EcoSense DO200A Dissolved Oxygen Meter

    EcoSense DO200A Dissolved Oxygen Meter

    From: $59.99

    To: $1,644.97

    The EcoSense® D0200A is an economical version of the quality and results expected from YSI®. The rugged housing is IP65 splash resistant, and the large LCD simultaneously displays ppm or percent saturation and temperature (ºC only). Easy-toreplace, screw-on cap membranes have a fast response time and are low-stirring dependent. Nine-volt battery life is typically 500 hours; indicator warns when battery level is low. Detachable probe and cable assembly sold separately below. One-year warranty on meter, six-month warranty on probe.

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  8. YSI® Photometers

    YSI® Photometers

    From: $11.99

    To: $1,693.98

    YSI® photometers are sophisticated water quality analysis systems that measure a variety of parameters and provide simple on-screen instructions. Results are available within seconds. IP67-rated waterproof systems use easy-to-use reagent tablets for testing instead of liquids or powder packets. Reagent tablets have an indefinite shelf life when stored in their foil pouches. 5.8" L x 10.8" W x 3" H, ship weight 7 lbs.

    The Y9300 photometer includes carrying case, light cap, 8 test tubes, dilution tube, 10 crush rods, cleaning brush and instruction manual. Also has backlit graphic display, self-adjusting sample tube holder and on-screen instructions in multiple languages.

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  9. YSI® Pro30 Conductivity/TDS/Salinity/Temperature Meter

    YSI® Pro30 Conductivity/TDS/Salinity/Temperature Meter

    From: $19.99

    To: $1,135.97

    The YSI Pro30 is ideal in any field application for the measurement of conductivity, salinity, TDS (total dissolved solids), and temperature.

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  10. EcoSense EC300A Conductivity Meter

    EcoSense EC300A Conductivity Meter

    From: $19.99

    To: $1,225.95

    The EcoSense® EC300A offers convenient conductivity, specific conductance, salinity, total dissolved solids and temperature for true field applications. Learn More

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