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    Milwaukee BEM401 TDS Meter with 110V Power and Mounting Kit, 0 to 1990 ppm Range

    Milwaukee BEM401 TDS Meter with 110V Power and Mounting Kit, 0 to 1990 ppm Range

    Milwaukee BEM401 TDS Meter with 110V Power and Mounting Kit, 0 to 1990 ppm Range is cost effective and easy to use. more

    $57.13

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    Milwaukee M10442B 1500 ppm TDS Calibration Solution, 20mL Sachet (Box of 25)

    Milwaukee M10442B 1500 ppm TDS Calibration Solution, 20mL Sachet (Box of 25)

    Milwaukee M10442B 1500 ppm TDS Calibration Solution, 20mL Sachet (Box of 25) gives accurate readings and great performance. more

    $20.35

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    Milwaukee M10080B 800 ppm TDS Calibration Solution, 20mL Sachet (Box of 25)

    Milwaukee M10080B 800 ppm TDS Calibration Solution, 20mL Sachet (Box of 25)

    Milwaukee M10080B 800 ppm TDS Calibration Solution, 20mL Sachet (Box of 25) guarantees great performance of the meters and effective solutions. more

    $16.37

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    Bluelab Combo Meter Ph Ec Tds Ppm Temp Hydroponics Blue Lab Conductivity

    Bluelab Combo Meter Ph Ec Tds Ppm Temp Hydroponics Blue Lab Conductivity

    BLUELAB COMBO METER FREE SHIPPING USA ONLY Bluelab Combo Meterâ ¢Better crops start with the Bluelab Combo Meter, it's all you need for simple and reliable crop management and it's all within arms reach. It is a conductivity, pH and temperature meter... more

    $219.99

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    Titan Controls Atlas 3 Day/night Co2 Monitor / Controller - Ppm Photocell

    Titan Controls Atlas 3 Day/night Co2 Monitor / Controller - Ppm Photocell

    Brand New! Titan Controls Atlas 3 Day/Night CO2 Monitor/Controller About the product Controls and monitors CO2 from 0 to 5000 parts per million (PPM). CO2 enrichment or CO2 exhaust features. ETL listed product to UL standard 917. Easy to set-up and... more

    $349.90

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    Genesis Ppm-1500 Tds Ec Calibration Solution 8 Oz

    Genesis Ppm-1500 Tds Ec Calibration Solution 8 Oz

    GENESIS PPM-1500 TDS EC CALIBRATION SOLUTION 8 OZ 1500 PPM meter calibration solution for EC and TDS meters. Will read 2142 S (microsiemens) using a .7 conversion factor. CONDUCTIVITY STANDARDS - EC meters (electrical conductivity) measures soluble salt c more

    $9.99

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    Hm Digital Ap-1 Aquapro Tds/ºc/ºf Ppm Meter Tester,

    Hm Digital Ap-1 Aquapro Tds/ºc/ºf Ppm Meter Tester,

    Untitled Document HM DIGITAL AP-1 METER FOR RESIDENTIAL USE This is Water Quality Meter From HM Digital AP-1 for residential use and here is the specifications of this item: 1 of AP-1 Water Quality Meter: FEATURES Includes an internal digital... more

    $25.79

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    CO2 Generator PPM Controller, complete w/PPM sensor

    CO2 Generator PPM Controller, complete w/PPM sensor

    The PPM-3 is the most affordable and simple CO2 controller available. Very accurate at measuring levels of Carbon Dioxide in your growing area from 0 to 5000 ppm. more

    $569.94 $397.18

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    (1,000,000+)
    Complete Greenhouse Controller w/PPM option

    Complete Greenhouse Controller w/PPM option

    The CGC-1 Complete Electronic Greenhouse Controller controls all of the main devices required in today's modern hydroponic garden. Your HID lights, supplemental CO2, hydroponic pumps, exhaust fans or air conditioner. C.A.P. strongly believes that the... more

    $527.94 $371.18

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    (1,000,000+)
    HANNA INSTRUMENTS HI70032P Calibration Solution, TDS, 1382 PPM, PK25

    HANNA INSTRUMENTS HI70032P Calibration Solution, TDS, 1382 PPM, PK25

    Conductivity Calibration Solution, 1382 PPM Solution more

    $31.17 $23.70

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    Rakuten.com Shopping

    (1,000,000+)
    General Hydroponics Hardwater Flora Micro, 6-Gallon

    General Hydroponics Hardwater Flora Micro, 6-Gallon

    FLORAMICRO HARDWATER: If your tap water is over 200 ppm (or contains Calcium above 70 ppm), use FloraMicro Hardwater. If your water contains 30 to 50 ppm Calcium, you can mix our original FloraMicro with FloraMicro Hardwater to create a perfect Micro... more

    $142.13

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    Bluelab Commercial Truncheon Nutrient Meter

    Bluelab Commercial Truncheon Nutrient Meter

    With a conductivity range right up to 6.0 EC (60 CF, 3000 ppm x 500 and 4200 ppm x 700), it will never leave you short. The Commercial Truncheon Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or ppm... more

    $107.55

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    Titan Controls 702610 Atlas 4 2-Room Carbon Dioxide Gas Monitor and Controller

    Titan Controls 702610 Atlas 4 2-Room Carbon Dioxide Gas Monitor and Controller

    Controls and monitors CO2 in (2)two areas from 0 to 5000 parts per million (PPM). Two (2) remote room sensors with 25 foot cables (included). Integrated 24 hour data logging feature built-in. Special operating mode to run two rooms with only one CO2... more

    $639.05

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    Hanna 1382 Ppm25c Calibration Solution 20ml Case Of 25

    Hanna 1382 Ppm25c Calibration Solution 20ml Case Of 25

    Package Price? Questions? Call Us @ 810-299-2420 M-F 9AM-5PM EDT NEW Hanna 1382 PPM@25C Calibration Solution 20mL case of 25 Call us at 810-299-2420 for Special Packages Discretely labeled, Professionally packaged, shipped as fast as possible with care... more

    $35.00

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    HydroFarm CAP Fuzzy Logic CO2 controller, complete with PPM sensor hf-CAPPM2A

    HydroFarm CAP Fuzzy Logic CO2 controller, complete with PPM sensor hf-CAPPM2A

    The absolute best CO2 controller available today. Fuzzy Logic brings the CO2 level up to the desired setting without over-shooting. Used to control both compressed CO2 and gas-burning CO2 generators. more

    $381.15

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    Hanna (TDS-1) TDS Tester; 1-999 PPM, 10 PPM RES.

    Hanna (TDS-1) TDS Tester; 1-999 PPM, 10 PPM RES.

    $21.78

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    Hanna (HI98351) DISTWP 1; 1-1999 PPM, 1 PPM RES.

    Hanna (HI98351) DISTWP 1; 1-1999 PPM, 1 PPM RES.

    $59.15

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    Hanna (PRIMO) TDS Meter; 1-1999 PPM, A/Off, 1 PPM RES.

    Hanna (PRIMO) TDS Meter; 1-1999 PPM, A/Off, 1 PPM RES.

    $42.40

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    "HI 70032P - - 1382 mg/L (ppm) TDS Solution, (25) 20 mL Sachets by Hanna Instruments"

    "HI 70032P - - 1382 mg/L (ppm) TDS Solution, (25) 20 mL Sachets by Hanna Instruments"

    "HANNA is one of the few producers to offer calibration solutions in packages from 20 to 500 mL for lab and field applications." more

    $24.50

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    Prestige PPM Meter Pen

    Prestige PPM Meter Pen

    The PPM Meter Pen by Prestige measures the amount of Total Dissolved Solids in your nutrient solution. In other words, the Prestige PPM Meter Pen measures the quality of your nutrient solution by measuring the concentration of nutrients within that... more

    $59.99

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    "HI 70032C - - 1382 mg/L (ppm) TDS Solution with Certificate, (25) 20 mL Sachets by Hanna Instrume"

    "HI 70032C - - 1382 mg/L (ppm) TDS Solution with Certificate, (25) 20 mL Sachets by Hanna Instrume"

    "HANNA is one of the few producers to offer calibration solutions in packages from 20 to 500 mL for lab and field applications." more

    $28.00

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    2 C.A.P CAP PPM-4 PPM4 Hydroponics CO2 Carbon Dioxide Monitor Controller Sensors

    2 C.A.P CAP PPM-4 PPM4 Hydroponics CO2 Carbon Dioxide Monitor Controller Sensors

    $274.95

    FREE shipping

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    Milwaukee TDS/PPM T75 Tester WP Multicolor - MIT75

    Milwaukee TDS/PPM T75 Tester WP Multicolor - MIT75

    Shop for Testers and Meters 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

    $136.99 $78.44

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    Hanna Instruments WM pH TDS Cntrl. 15 VAC

    Hanna Instruments WM pH TDS Cntrl. 15 VAC

    "HI 9935 is a pH and TDS controller for fertilizer solution dosage in hydroponics. HI 9935 measures pH from 0 to 14 and TDS from 0 to 1999 mg/L (ppm). Two separate set points can be adjusted from 4 to 7 pH and 900 to 1800 ppm (mg/L). The relays are... more

    $637.80

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    Control Wizard 24/7 Nutrient Meter

    Control Wizard 24/7 Nutrient Meter

    Measuring the pH, PPM and temperature of nutrient solutions for your garden used to require an advanced degree in horticultural wizardy. But now, thanks to the Control Wizard 24/7 Three-In-One Nutrient Meter, keeping track of this vital and useful... more

    $189.99

    FREE shipping

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    Hydro Logic Merlin-GP Eco-Green Drain

    Hydro Logic Merlin-GP Eco-Green Drain

    "Eco-Green Drain Elbow 3/8 QC, for the Merlin-GPProduces 30 gallons per hour or 750 gallons per day of ultra pure, low ppm water. Removes 95%+ of chlorine, hardness (calcium & magnesium), excessive minerals (iron), and all other contaminants. Wastes... more

    $21.13

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