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    HM Digital TDS-4 Pocket Size TDS Tester Meter Without Digital Thermometer, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy

    HM Digital TDS-4 Pocket Size TDS Tester Meter Without Digital Thermometer, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy

    Product Description: How Pure is Your Water? A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or... more

    $19.50

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    HM TDS-3 Meter with Carrying Case

    HM TDS-3 Meter with Carrying Case

    HM TDS-3 Meter is ideal for both residential and commercial applications including but not limited to water purification, waste-water regulation, aquaculture, hydroponics, and residential RO applications. Measurement range is 0-9990 ppm. more

    $13

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    HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

    HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

    Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With... more

    $14.56

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    HM Digital TDS-4TM Meter with Digital Thermometer

    HM Digital TDS-4TM Meter with Digital Thermometer

    Handheld Hydro Tester pH Meter. more

    $23.89

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    HM Digital QC-1 TDS & Conductivity Monitor

    HM Digital QC-1 TDS & Conductivity Monitor

    The HM Digital QC-1 TDS & Conductivity Monitor is a monitor that checks your water for conductivity levels and TDS (total dissolved solids). more

    $23

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    HM DM-1 In-Line Dual TDS Monitor

    HM DM-1 In-Line Dual TDS Monitor

    The HM DM-1 In-Line Dual TDS Monitor allows you to measure the tap water going into your filteration system versus the filtered water coming out of your system at any time. Stop guessing the performance of your filtration system with the DM1! more

    $25

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    HM Digital SM-1 TDS Monitor

    HM Digital SM-1 TDS Monitor

    The HM Digital SM-1 TDS Monitor is an inline TDS monitor that can be used to electronically test your water for total dissolved solids. more

    $25

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    HM Digital PS-100 Water TDS Control System

    HM Digital PS-100 Water TDS Control System

    The HM Digital PS-100 Water TDS Control System is a panel mount TDS controller that monitors for total dissolved solids in your water. more

    $143

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    HM Digital DM-2 In-Line Dual TDS Monitor

    HM Digital DM-2 In-Line Dual TDS Monitor

    The HM Digital DM-2 In-Line Dual TDS Monitor is a water tester which is used to test the amount of total dissolved solids (TDS) in water. It is a new model of the HM DM-1 In-Line Dual TDS Monitor. more

    $40

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    Hm Digital Tds-ez Testing Meter Hand Held Tds Monitor 2 Year Warranty

    Hm Digital Tds-ez Testing Meter Hand Held Tds Monitor 2 Year Warranty

    SquareTrade © AP6.0 HM Digital TDS-EZ Testing Meter Abundant Flow Water Systems Other Filter media / resin for tanks Combination / Package Deals Special Offers Replacement filters Reverse Osmosis Water Filters Whole house Filters Aquarium Water Filters... more

    $15.95

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    Hm Digital Tds-ez Water Quality Tds Tester, +/- 3% Readout Accuracy $0ship

    Hm Digital Tds-ez Water Quality Tds Tester, +/- 3% Readout Accuracy $0ship

    since 1998 ::Store ::Policy ::About Us :: StoreSearch in titles descriptions StoreCategories Store home Home Garden Kitchen,Dining Bar Yard,Garden Outdoor Living HouseholdSupplies Cleaning more... Clothing,Shoes Accessories Men'sClothing... more

    $17.50

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    Tdsez + Ws-425w Well, Hm Digital Tds Ppm Meter/tester + Watersafe Water Test Kit

    Tdsez + Ws-425w Well, Hm Digital Tds Ppm Meter/tester + Watersafe Water Test Kit

    HM Digital TDS-EZ TDS Meter + Watersafe WS-425W Well Water Test Kits COMBO - Authorized Distributor - New Fresh Stock! Expiration date: 07/2015 Watersafe WS-425W Well Water Test Kits Ideal for individuals who get their water from a private well. Tests... more

    $33.99

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    Everpure Digital Pocket TDS Meter EV650020

    Everpure Digital Pocket TDS Meter EV650020

    The Everpure EV650020 measures the following in your water: Total Dissolved Solids (TDS) Temperature The Everpure Digital Pocket TDS Meter EV650020 accurately measures the TDS level in your water. This Everpure digital meter also includes an more

    $46.95

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    HM Digital ZT-2 Basic TDS Tester, 0-999 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

    HM Digital ZT-2 Basic TDS Tester, 0-999 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

    How Pure is Your Water? A TDS meter is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the ZT-2 can... more

    $20.50

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    Hm Digital Tds Zt-2 Water Quality Tester Meter

    Hm Digital Tds Zt-2 Water Quality Tester Meter

    HM Digital TDS ZT-2 Water Quality Tester Meter Compact Conductivity Tester Monitor Membrane & DI Efficiency Easy to use 1-touch Operation This handheld TDS (total dissolved solids) meter tests your water for purity. Range: 0 - 999 ppm (mg/L) Resolution: 1 more

    $17.99

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    Hm Digital Tds-3 Handheld Meter With Carrying Case

    Hm Digital Tds-3 Handheld Meter With Carrying Case

    WHAT YOU WILL RECEIVE: ONE (1) NEW HM Digital TDS-3 Handheld Meter Carrying Case CLICK BELOW FOR YOUR WARRANTY AND CALIBRATION INSTRUCTIONS Get It Fast !! Get a Tracking Number !! For Only $2.00 More, Select USPS Priority Mail at Checkout and Receive... more

    $22.15

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    Hm Digital Tds Meter Tds Tester Tds Ez Hydroponics Water Testing

    Hm Digital Tds Meter Tds Tester Tds Ez Hydroponics Water Testing

    BRAND NEW DIGITAL TDS METER FOR WATER TESTING TDS EZ You are Bidding on a Brand New TDS EZ Handheld T otal D issolved S olids Tester Water Quality TDS Tester TDS-EZ Perfect for Drinking Water, Water Filter Checks, Travel, Hydroponics, Aquariums, Food... more

    $11.99

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    HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy

    HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy

    Product Description: NEW! The COM-80 is an economically priced, reliable EC/TDS meter (ppm pen / nutrient tester) that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking... more

    $42.05

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    HM Digital TDS-3 Handheld TDS meter

    HM Digital TDS-3 Handheld TDS meter

    About Hydrofarm, Inc. Celebrated as the nation's oldest and largest manufacturer of hydroponic equipment and grow lights, Hydrofarm has made professional-grade equipment available to all since 1977. All grow lights and electric components are UL... more

    $63.99

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    (1,000,000+)
    HM Digital TDS EZ Water Tester Water Purity Filter Water Meter

    HM Digital TDS EZ Water Tester Water Purity Filter Water Meter

    Economy model that is ideal for end-users. Highly efficient and accurate due to its advanced microprocessor technology. Hold Function: saves measurements for convenient reading and recording. Measurement Range: 0-9990 ppm. From 0-999 ppm, the... more

    $119.99 $12.99

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    (1,000,000+)
    HM Digital TDS-3 Handheld Meter with Carrying Case

    HM Digital TDS-3 Handheld Meter with Carrying Case

    Ideal for residential and commercial use.Includes a carrying case with belt clip. This meter shuts off automatically after 10 minutes of non use to conserve batteries. Includes a TDS (Total Dissolved Solids) chart sticker on the back of the meter that... more

    $22.20

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    Rakuten.com Shopping

    (1,000,000+)
    HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume

    HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume

    TDS Meter NaCl Calibration Solution C-342. more

    $10.20

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    HM Digital ORP-200 ORP Meter Water Tester w/ Temp.

    HM Digital ORP-200 ORP Meter Water Tester w/ Temp.

    The HM Digital ORP-200 ORP Meter Water Tester with Temperature Gauge is a water tester used to test the Oxidation Reduction Potential (ORP) in your water supply. more

    $84

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    HM PH-200 Waterproof pH Meter

    HM PH-200 Waterproof pH Meter

    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. more

    $65

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    HM Digital pH Buffer Solution Variety Pack

    HM Digital pH Buffer Solution Variety Pack

    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. more

    $10

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    HM Digital Meters ZT-2 TDS Meter ZT-2

    HM Digital Meters ZT-2 TDS Meter ZT-2

    HM Digital Meters ZT-2 TDS Meter Features: -Power source: 2 x 1.5V button cell batteries (included)(357A).-TDS meter.-Range: 0 - 999 ppm (mg/L).-Resolution: 1 ppm (0-999 ppm).-Accuracy: +/- 3%Conversion.-Factor: NaCl (avg. 0.5).-Battery life: Approx.... more

    $42.95 $24.99

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    HM Digital TDS-EZ Handheld TDS Meter

    HM Digital TDS-EZ Handheld TDS Meter

    HM Digital TDS-EZ Handheld TDS Meter. The HM Digital TDS-EZ Handheld TDS Meter is ideal for all basic water testing applications especially for testing the performance of your reverse osmosis system. Use the TDS-EZ to measure total dissolved solids to... more

    $16.29

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    HM Digital TDS-3 Handheld Meter with Carrying Case

    HM Digital TDS-3 Handheld Meter with Carrying Case

    $22.20

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    HM Digital TDS-4 Pocket Size TDS Tester

    HM Digital TDS-4 Pocket Size TDS Tester

    $21.00

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    "HM Digital TDS-EZ Water Quality TDS Meter Tester"

    "HM Digital TDS-EZ Water Quality TDS Meter Tester"

    "The HM TDS EZ Water Quality Tester, the best value meter on the market, tests the quality of your tap and drinking water, and is ideal for all basic water testing applications. This device is priceless for both homeowners and business owners. Its... more

    $15.59

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    HM Digital (TDS-4) Handheld Digital TDS Meter/Monitor

    HM Digital (TDS-4) Handheld Digital TDS Meter/Monitor

    $21.00

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    HM Digital TDS-4 Pocket Size TDS Meter

    HM Digital TDS-4 Pocket Size TDS Meter

    HM Digital TDS-4 Pocket Size TDS Meter. HM Digital TDS-4 Handheld TDS/Temp Meter Features: The perfect pocket size meter for both consumer or commercial useHighly efficient and accurate due to its advanced microprocessor technology Hold function --... more

    $22.00

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    (5,000+)
    HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case

    HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case

    $42.11

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    Handheld TDS Meter ZT-2

    Handheld TDS Meter ZT-2

    Handheld TDS Meter ZT-2 TDS-ZT2. HM Digital ZT-2 Handheld TDS Meter Features: Highly efficient and accurate due to its advanced microprocessor technology. Hold function -- Saves measurements for convenient reading and recording with the sound of a... more

    $14.99

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    (5,000+)
    HM Digital Meters Handheld Water Total Dissolved Solids Tester - AP-1 AP-1

    HM Digital Meters Handheld Water Total Dissolved Solids Tester - AP-1 AP-1

    HM Digital Meters Handheld Water Total Dissolved Solids Tester - AP-1 Features: -Power Source: 1 x 3V CR2032 button cell (included).-TDS Range: 0-5000 ppm (mg/L)..-Temperature Range: 0-80 C; 32-176 F.-Resolution: 1 ppm.-Temperature Resolution: 0.1... more

    $40.99

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    HM Digital Meters SP-1 TDS / EC Sensor Probe for Panel Mounted Controllers SP-1

    HM Digital Meters SP-1 TDS / EC Sensor Probe for Panel Mounted Controllers SP-1

    HM Digital Meters SP-1 TDS / EC Sensor Probe for Panel Mounted Controllers Features: -Connector: 4 pin.-Sensor Material: Stainless steel.-Pin: Yes.-Probes: 1/2'' threaded bushing (detachable from cable).-Size: 1/2'' threaded bushing.-Cable: 9.8 ft (3... more

    $99.74 $86.95

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    HM Digital SP-2 Dual TDS Sensor Probe for DM-1 Dual Inline TDS Monitor

    HM Digital SP-2 Dual TDS Sensor Probe for DM-1 Dual Inline TDS Monitor

    HM Digital SP-2 Dual TDS Sensor Probe for DM-1 Dual Inline TDS Monitor HM-SP-2. HM Digital SP-2 Dual TDS Sensor Probes Features: Each sensor has a blue or red wrap and is labeled in or out Stainless steel sensors HM Digital SP-2 Dual TDS Sensor Probes... more

    $11.99

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    (5,000+)
    HM Digital PTDS-4TM Pocket Size TDS Meter w/ Temp

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

    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. more

    $25

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    TDS-3 Handheld TDS meter Multicolor - HMDTDS3

    TDS-3 Handheld TDS meter Multicolor - HMDTDS3

    Shop for Other Outdoor Items from Hayneedle.com! About Hydrofarm, Inc.Celebrated as the nation's oldest and largest manufacturer of hydroponic equipment and grow lights, Hydrofarm has made professional-grade equipment available to all since 1977. All... more

    $63.99

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    HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter

    HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter

    $59.95

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    More information about Water Filters

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