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Hanna Checkers

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  • ORP/pH/Temperature Tester (HI98121)  - Hanna Instruments

    ORP/pH/Temperature Tester (HI98121) - Hanna Instruments

    Hanna Instruments

    $239.99
    The HI98121 is a waterproof pH, ORP and temperature meter. The housing of this tester has been completely sealed against humidity and is designed to float. Electrode replacement with the stainless steel round connector means there are no pins to bend or...
  • HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments

    HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments

    Hanna Instruments

    $67.99
    The Hanna Freshwater Alkalinity Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color...
  • Pure Water Tester (HI98308) - Hanna Instruments

    Pure Water Tester (HI98308) - Hanna Instruments

    Hanna Instruments

    $89.99
    The HI98308 Pure Water tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The HI98308 Pure Water tester features graphite electrodes to reduce polarization effects and an exposed temperature probe for fast...
  • HI-7030M Conductivity Solution, (230 mL) bottle - Hanna Instruments

    HI-7030M Conductivity Solution, (230 mL) bottle - Hanna Instruments

    $11.99
    Maximum accuracy is high on the agenda here at Hanna. Browse our Conductivity Calibration Solutions specifically produced for Conductivity meters and electrodes. Hanna conductivity electrodes can be calibrated in just a few minutes, wherever you are...
  • Professional Reef Digital Checker Kit - Hanna

    Professional Reef Digital Checker Kit - Hanna

    Hanna Instruments

    $329.99
    Take the Guesswork Out of Your Reef Tank Maintenance with the Hanna Instruments Reef Professional Kit Achieve the stable and pristine water parameters your corals need to thrive with the Hanna Instruments Reef Professional Kit. This all-in-one...
  • Ultra Pure Water (UPW) Tester (HI98309)  - Hanna Instruments

    Ultra Pure Water (UPW) Tester (HI98309) - Hanna Instruments

    Hanna Instruments

    $109.99
    The Hanna Instruments HI98309 is a specialized, high-precision pocket tester designed specifically for monitoring the purity of deionized, distilled, and ultra-pure water. As the first pure water tester to measure in 1/1000ths of micro-Siemens...
  • Combo pH/Conductivity/TDS Tester -High Range (HI98130)  - Hanna Instruments

    Combo pH/Conductivity/TDS Tester -High Range (HI98130) - Hanna Instruments

    Hanna Instruments

    $224.99
    Hanna Instruments HI98130 Combo pH/EC/TDS/Temperature Tester (High Range) Streamline your water analysis with the Hanna Instruments HI98130, a high-precision, 4-in-1 pocket tester designed for high-range measurements. This professional-grade device...
  • Low Range pH/Conductivity/TDS Tester (HI98129)  - Hanna Instruments

    Low Range pH/Conductivity/TDS Tester (HI98129) - Hanna Instruments

    Hanna Instruments

    $224.99
    Take the guesswork out of water testing with the Hanna Instruments HI98129, the industry-standard "Combo" tester. Engineered for professionals in hydroponics, aquaculture, water treatment, and laboratory research, this 4-in-1 pocket meter provides...