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  • 357A Replacement 1.5v Button Cell Battery 10-Pack

    (357A)

    …Cell Battery Replacement is a battery replacement for your HM digital water monitor. This battery replacement will keep your HM TDS, TM, COM, and DM model working at peak performance.    HM Digital 1.5 V Button Cell Battery Replacement: Item Weight: 0.10 ounces Contains two replacement batteries For…

    357A Replacement 1...
    Our Price: $ 4.00
    Retail:$5.72
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    $1.72 (30%)
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    Discontinued Product. Read Description for Options.
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  • HM Digital PH-200 Replacement pH Sensor SP-P2

    (SP-P2)

    …Compensation. (ATC) The HM Digital PH-200 Replacement pH Sensor SP-P2 Specifications: pH range: 0-14 Temperature range: 0-80 degrees C; 32-176 degrees F Accuracy: +/- 0.02 pH Dimensions: 7.3" x 1.3" x 1.3" weight: 3.4 oz. This pH testing meter features a replaceable sensor and a waterproof housing.…

    HM Digital PH-200...
    Our Price: $ 50.99
    Retail:$58.99
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    $8.00 (14%)
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    Discontinued Product. Read Description for Options.
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  • HM Digital COM-100 Replacement TDS Sensor SP-C1

    (SP-C1)

    Includes only the sensor The HM Digital COM-100 Replacement TDS Sensor SP-C1 is a combination water testing meter and is perfect for all water quality testing applications. The HM Digital SP-C1 measures electrical conductivity, (EC) total dissovled solids, (TDS) and temperature. This TDS monitor…

    HM Digital COM-100...
    Our Price: $ 31.95
    Retail:$38.99
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    $7.04 (18%)
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  • HM Digital SP-O2 ORP Sensor Replacement for ORP200

    (SP-O2)

    The HM Digital SP-O2 ORP Sensor Replacement is an Oxidation Reduction Potential (ORP) replacement sensor for the HM Digital ORP-200 ORP Meter Water Tester . (SP-O2 / SP-O2)

    HM Digital SP-O2 ORP...
    Our Price: $ 55.99
    Retail:$64.99
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    $9.00 (14%)
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  • HM Digital DM-2 In-Line Dual TDS Monitor

    (DM-2)

    …window washing, car washes, and more. It can also be used in residential applications to determine when to change your whole house filter cartridges, reverse osmosis membranes, and so on. It comes equipped with 1/4 inch Quick-Connect T-fittings. This Dual Range TDS monitor measures from 0-999…

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    Related Items: 1 4 Inch Inline | 1 4 Inch Inline Filter | Hm Digital
    HM Digital DM-2 In...
    Our Price: $ 227.50
    Retail:$289.95
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    $62.45 (22%)
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  • HM Digital ORP-200 ORP Meter Water Tester w/ Temp.

    (ORP-200)

    …x 1.3" x 1.3" Replaceable Sensor: HM Digital Model SP-O2 Resolution: 1 mV; Temperature resolution is 0.1 F Calibration: Digital calibration by push button Housing: Waterproof Plastic (submersible; floats) Power source: 3 x 1.5V button cell batteries (included) Electrode: Replaceable glass sensor and…

    Related Items: Hm Digital
    HM Digital ORP-200...
    Our Price: $ 87.95
    Retail:$108.99
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    $21.04 (19%)
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  • HM TDS-4 Pocket Size TDS Meter, TDS4 10 Pack - 10-Pack

    (TDS4)

    …Temp Range: 0-80 degrees Celsius Resolution: 1 ppm, 1 degree Celsius Accuracy: plus or minus 2% Power Source: 2 x 1.5 volt button cell batteries (included) Battery life : 1000 hours Dimensions: 5.5" x .9" x .55" Also known by part number TDS-4. Price is for a 10-Pack of replacements (TDS4 / TDS-4)

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    HM TDS-4 Pocket Size...
    Our Price: $ 17.95
    Retail:$34.99
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    $17.04 (49%)
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  • HM PH-200 Waterproof pH Meter

    (PH-200)

    …Simultaneous temp display Automatic Temperature Compensation (ATC) Auto-Off Function Data Hold Function Low-Battery Indicator Large LCD Screen Replaceable Glass Sensor and Referrence Tube Electrodes Comes with Cap, Batteries, and Lanyard One Year Factory Warranty Comes with one 7.0 pH buffer…

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    HM PH-200 Waterproof...
    Our Price: $ 319.80
    Retail:$379.96
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    $60.16 (16%)
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    Discontinued Product. Read Description for Options.
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