Controllers & Testing

  • 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
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  • HI721-21 Iron Standards for HI721 Hanna Checker - 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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  • HI755-11 Alkalinity Standards for HI755 Hanna Checker - Marine Water

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

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

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

    11 Reward Points
    $11.99
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  • Insta-Test Wide Range pH Strips (Fresh Water) - LaMotte

    12 Reward Points
    $12.99
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  • 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
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  • Insta-Test Alkalinity 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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  • 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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  • HI708-25 Nitrite HR Reagents - Fresh Water

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

    14 Reward Points
    $14.99
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  • HI731318 Cuvette Cleaning Cloths

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

    14 Reward Points
    $14.99
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  • Vertex Titanium Grounding Pole

    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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  • 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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