Controllers & Testing

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  • Milwaukee Instruments Electrode Rinse Solution, Single Use Packets

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  • Milwaukee pH Calibration Fluid - Single Use Packet

    Starting at: $0.99

  • PINPOINT pH High Precision Calibration Fluid

    Starting at: $0.99

  • pH/ORP Probe Holder with Suction Cup Quick look

    pH/ORP Probe Holder with Suction Cup

    1 Reward Points

    reg. $1.99

    Special Price: $1.69

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  • PINPOINT ORP (Redox) 400 Calibration Fluid

    2 Reward Points
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  • Neptune Systems Conductivity Calibration Solution

    Starting at: $2.99

  • BRS pH/ORP Probe Tip Soaker Bottle Quick look

    BRS pH/ORP Probe Tip Soaker Bottle

    3 Reward Points

    reg. $3.99

    Special Price: $3.05

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  • HI706-25 Phosphorus HR reagents - Fresh Water

    5 Reward Points
    $5.99
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  • Aqua Craft Refractometer Calibration Fluid

    6 Reward Points
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  • PINPOINT Salinity Calibration Fluid

    7 Reward Points
    $7.99
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  • HI718-25 Iodine Reagents - Fresh water

    8 Reward Points
    $8.99
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  • HI716-25 Bromine Reagents - Fresh Water

    8 Reward Points
    $8.99
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  • HI736-25 Phosphorus ULR Reagents - Marine Water

    8 Reward Points
    $8.99
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  • HI721-25 Iron Reagents - Fresh Water

    8 Reward Points
    $8.99
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  • Insta-Test Free Chlorine Strips (Fresh Water) - LaMotte

    8 Reward Points
    $8.99
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  • HI711-25 Total Chlorine Reagents - Marine & Fresh Water

    8 Reward Points
    $8.99
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  • HI764-25 Nitrite ULR Reagents for HI764 Checker - Marine Water

    8 Reward Points
    $8.99
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  • HI749-25 Chromium VI LR reagents - Fresh Water

    8 Reward Points
    $8.99
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  • Insta-Test Total Chlorine Strips (Fresh Water) - LaMotte

    8 Reward Points
    $8.99
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  • HI755-26 Alkalinity Checker Reagents - Marine Water

    8 Reward Points
    $8.99
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  • HI701-11 Free Chlorine Standards for HI701 Hanna Checker - Fresh Water Quick look

    HI701-11 Free Chlorine Standards for HI701 Hanna Checker - Fresh Water

    9 Reward Points

    reg. $10.99

    Special Price: $9.34

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  • HI713-25 Phosphate Checker Reagents - Marine & Fresh Water

    9 Reward Points
    $9.99
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  • HI717-25 Phosphate HR Reagents

    9 Reward Points
    $9.99
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  • ReefKeeper Bus Cables - Digital Aquatics

    Starting at: $9.99

  • Digital Aquatics ReefKeeper Lunar Pod

    Starting at: $9.99

  • PINPOINT Probe Storage Fluid

    9 Reward Points
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  • ReefKeeper Switch Adapter Kit - Digital Aquatics

    9 Reward Points
    $9.99
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  • HI706-11 Phosphorus HR Calibration Standards

    10 Reward Points
    $10.99

    Out of stock

  • HI711-11 Total Chlorine Standards for HI711 Hanna Checker - Fresh Water

    10 Reward Points
    $10.99
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  • JBJ Digi-Temp2 Thermometer and Probe

    10 Reward Points
    $10.99

    Out of stock

  • HI761-11 Total Chlorine ULR Standards

    10 Reward Points
    $10.99
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  • HI718-11 Iodine Calibration Standards

    10 Reward Points
    $10.99
    Please wait...
  • HI721-21 Iron Standards for HI721 Hanna Checker - Fresh Water

    10 Reward Points
    $10.99
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  • Reagents for LaMotte Carbon Dioxide Test Kit

    10 Reward Points
    $10.99
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  • HI761-25 Total Chlorine ULR Reagents - Fresh Water

    10 Reward Points
    $10.99
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  • Insta-Test Free & Total Chlorine & Chloramine Strips (Fresh Water) - LaMotte Quick look

    Insta-Test Free & Total Chlorine & Chloramine Strips (Fresh Water) - LaMotte

    11 Reward Points

    reg. $12.99

    Special Price: $11.04

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  • BRS pH/ORP Probe Storage Solution One Pint Quick look

    BRS pH/ORP Probe Storage Solution 16 oz

    11 Reward Points

    reg. $12.99

    Special Price: $11.69

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  • Hanna Electrode Storage Solution HI70300M 230 mL

    11 Reward Points
    $11.99
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  • HI713-11 Phosphate LR Standards for HI713 Hanna Checker - Fresh & Marine Water

    11 Reward Points
    $11.99
    Please wait...
  • HI771-25 Total Chlorine UHR Reagents - Fresh Water

    11 Reward Points
    $11.99
    Please wait...
  • HI764-11 Nitrite ULR Standards for HI764 Hanna Checker - Marine Water

    11 Reward Points
    $11.99
    Please wait...
  • HI736-11 Phosphorus ULR Standards for HI736 Hanna Checker - Marine Water

    11 Reward Points
    $11.99
    Please wait...
  • HI755-11 Alkalinity Standards for HI755 Hanna Checker - Marine Water

    11 Reward Points
    $11.99
    Please wait...
  • Hamilton 24-Hour Grounded Timer

    11 Reward Points
    $11.99
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  • HI717-11 Phosphate HR Calibration Standards

    11 Reward Points
    $11.99
    Please wait...
  • Vertex Sensor-Mount

    11 Reward Points
    $11.99
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  • HI701-25 Free Chlorine Reagents - Marine & Fresh Water

    11 Reward Points
    $11.99
    Please wait...
  • Digital Timer with Magnet - OXO Good Grips

    12 Reward Points
    $12.99
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  • AquaBus Cable - Neptune Systems

    Starting at: $12.99

  • HI707-25 Nitrite LR reagents - Fresh water

    12 Reward Points
    $12.99
    Please wait...
  • Insta-Test Alkalinity Strips (Fresh Water) - LaMotte

    12 Reward Points
    $12.99
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  • Insta-Test Wide Range pH Strips (Fresh Water) - LaMotte

    12 Reward Points
    $12.99
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  • HI700-25 Ammonia LR Reagents - Fresh Water

    13 Reward Points
    $13.99
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  • HI708-25 Nitrite HR Reagents - Fresh Water

    14 Reward Points
    $14.99
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  • HI731318 Cuvette Cleaning Cloths

    14 Reward Points
    $14.99
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  • Carbonate REEFER Test Kit - NYOS

    14 Reward Points
    $14.99
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  • Vertex Titanium Grounding Pole

    14 Reward Points
    $14.99
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  • Digital Timer - OXO Good Grips

    14 Reward Points
    $14.99
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  • 2 Channel Apex to Light Dimming Cable - Neptune Systems

    14 Reward Points
    $14.99
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  • Red Sea Iron Pro Reagent Refill Kit

    14 Reward Points
    $14.99
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  • Hanna General Purpose Cleaning Solution HI7061L 500 mL

    14 Reward Points
    $14.99
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  • 12V Power Supply - Neptune Systems

    15 Reward Points
    $15.99
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  • Reagents for LaMotte Calcium Hardness Test Kit

    15 Reward Points
    $15.99
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  • Float Switch Kits - Digital Aquatics

    15 Reward Points
    $15.99
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