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  • HM Digital PTDS-4TM Pocket Size TDS Meter w/ Temp 10-Pack

    (TDS-4TM)

    The HM Digital PTDS-4TM Pocket Size TDS Meter with Temperature Gauge is a hand held digital water quality tester which is used to test the amount of total dissolved solids (TDS) and other impurities in water. This pocket size HM Digital water test TDS meter is the smallest and lightest TDS meter…

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    Our Price: $ 22.20
    Retail:$49.99
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    $27.79 (56%)
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    Discontinued Product. Read Description for Options.
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  • HM TDS-4 Pocket Size TDS Meter, TDS4 10 Pack - 10-Pack

    (TDS4)

    The HM TDS-4 Meter will monitor the TDS (Total dissolved solids) levels for drinking water, water filters, hydroponics, Aquariums, Food and Coffee, Pools and Spas and residential RO applications. Measurement range is 0-9990 ppm. TDS Meters Are Used To: Check the performance of your water filter…

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    Our Price: $ 17.95
    Retail:$34.99
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    $17.04 (49%)
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    Discontinued Product. Read Description for Options.
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  • HM Digital TDS-EZ 0-9990 PPM Water Quality Tester

    (TDS-EZ)

    The HM Digital TDS EZ water quality tester is ideal for consumers who want to know what is in their drinking water. Get accurate readings fast due to the advanced factory calibrated microprocessor with hold function for convenient reading and recording from the LCD screen. Included is a convenient…

    Our Price: $ 19.95
    Retail:$24.99
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    $5.04 (20%)
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  • HM Digital pH Buffer Solution Variety Pack

    (pH Buffer)

    The pH Buffer Solution Variety Pack from HM Digital is lightweight, economically priced and has an indefinite shelf life. Easy to use. Preparation directions are included directly on the bottle. Includes 3 packets of 4.0 pH, 6 packets of 7.0 pH, and 3 packets of 10.01 pH pH Buffer Solution Variety…

    Our Price: $ 9.95
    Retail:$11.99
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    $2.04 (17%)
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    Discontinued Product. Read Description for Options.
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  • 357A Replacement 1.5v Button Cell Battery 10-Pack

    (357A)

    The HM Digital 357A 1.5 V Button Cell Battery Replacement is the correct replacement for the following models: HM Digital TDS-3 HM Digital TDS-4 HM Digital TDS-4TM HM Digital TM-1 HM Digital COM-100 HM Digital DM-1 The 357A (1.5v) Button Cell Battery Replacement is a battery replacement for your HM…

    Our Price: $ 4.00
    Retail:$5.72
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    $1.72 (30%)
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  • HM Digital AquaPro AP-2 Water Quality Tester - EC 12-Pack

    (AP-2)

    The HM Digital AquaPro AP-2 Water Quality Tester is a hand-held digital water quality tester which is used to test the electrical conductivity (EC) of water. It also tests the temperature of water, and features Automatic Temperature Compensation (ATC). Useful for both consumers and hobbyists, it…

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    Our Price: $ 25.79
    Retail:$42.99
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    $17.20 (40%)
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    Discontinued Product. Read Description for Options.
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  • HM PH-200 Waterproof pH Meter

    (PH-200)

    The HM PH-200 Waterproof pH Meter is a highly accurate, professional-grade digital pH and temperature meter. Incredibly accurate, the PH200 is perfect for both consumer and commercial use. The pH-200 Features: pH and Temperature Measurement Auto-ranging three point calibration with digital fine…

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    Our Price: $ 319.80
    Retail:$379.96
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    $60.16 (16%)
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