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    1000ppm Calibration Solution 12880 S/ cm conductivity solution
    1000ppm Calibration Solution12880 S/ cm conductivity solution12880mS/cm Calib Sol 20ml

    $6.09

    $11.24

    $1.04

     
    1382 PPM Solution 220ml 1382ppm Solution, 230ml 1382ppm TDS Sol, 460ml
    1382 PPM Solution 220ml1382ppm Solution, 230ml1382ppm TDS Sol, 460ml

    $8.74

    $11.69

    $14.75

     
    1382PPM@25c Calibration Soluti 1413 US Solution 500 ml 1413mS/cm Calibration Sol. 25x
    1382PPM@25c Calibration Solution1413 US Solution 500 ml1413mS/cm Calibration Sol. 25x

    $1.05

    $12.97

    $1.08

     
    1413mS/cm Sol. 230mL 1500 ppm Calibration Solution 1 qt 1500 ppm Calibration Solution 8 oz
    1413mS/cm Sol. 230mL1500 ppm Calibration Solution 1 qt1500 ppm Calibration Solution 8 oz

    $13.98

    $15.50

    $6.45

     
    1500PPM Packet 1500PPM Solution, 230ml 1500PPM TDS Sol 16oz
    1500PPM Packet1500PPM Solution, 230ml1500PPM TDS Sol 16oz

    $0.79

    $13.30

    $14.78

     
    2-Way pH & Moisture Meter 2.77 EC Conductivity Sol 250ml 2.77 pH Bluelab Cali Solution
    2-Way pH & Moisture Meter2.77 EC Conductivity Sol 250ml2.77 pH Bluelab Cali Solution

    $5.17

    $6.37

    $1.41

     
    Active Air 3 - Way Meter Active Aqua Dual Inline TDS Meter APCEPH1 PH Replacement Probe
    Active Air 3-Way MeterActive Aqua Dual Inline TDS MeterAPCEPH1 PH Replacement Probe

    $7.46

    $37.46

    $48.71

     
    AquaPro TDS/Temperature Meter Batteries for pH/TDS pen, 1.4v, pack of 4 Bluelab 2.77 EC Con.Sol.500 ml
    AquaPro TDS/Temperature MeterBatteries for pH/TDS pen, 1.4v, pack of 4Bluelab 2.77 EC Con.Sol.500 ml

    $32.21

    $5.21

    $8.24

     
    BlueLab Combo Meter Bluelab Commercial Truncheon Meter Bluelab Connect Stick
    BlueLab Combo MeterBluelab Commercial Truncheon MeterBluelab Connect Stick

    $231.00

    $105.00

    $113.77

     
    Bluelab Grower's Toolbox-Limited Edition Bluelab Guardian Monitor Bluelab Guardian Monitor Connect
    Bluelab Grower's Toolbox-Limited EditionBluelab Guardian MonitorBluelab Guardian Monitor Connect

    $149.25

    $325.01

    $373.50

     
    Bluelab Guardian Monitor Power Supply Bluelab Meter Carry Case Bluelab pH meter with probe
    Bluelab Guardian Monitor Power SupplyBluelab Meter Carry CaseBluelab pH meter with probe

    $16.95

    $18.75

    $157.50

     
    Bluelab pH Pen Bluelab PH Probe KCI Storage Solution Bluelab Probe Care Kit Conductivity
    Bluelab pH PenBluelab PH Probe KCI Storage SolutionBluelab Probe Care Kit Conductivity

    $84.37

    $8.96

    $8.96

     
    Bluelab Soil PH Pen Cal Check Solution 27.7CF/EC2.77 250ml Cal Sol
    Bluelab Soil PH PenCal Check SolutionCalibration Solultion 250ml 27.7CF/EC2.77

    $133.10

    $1.35

    $7.45

     
    Calibration Solution 15,000 uS Calibration Solution 1500PPM 4.0 pH Calib Solution 20 ml
    Calibration Solution 15,000 uSCalibration Solution 1500PPMCalibration Solution 4.0 pH 20ml

    $1.72

    $0.96

    $1.35

     
    7.0 pH Cali Solution 20 ml Checker pH Tester with Replaceable Electrode Combo pH/ ORP/ Temperature Tester
    Calibration Solution 7.0 pH 20 mlChecker pH Tester with Replaceable ElectrodeCombo pH/ ORP/ Temperature Tester

    $1.35

    $32.76

    $140.96

     
    Conductivity/TDS Probe for Soil Measurement of HI993310 Digital Soil Thermometer Digital Temperature Controller for Heat Mat
    Conductivity/TDS Probe for Soil Measurement of HI993310Digital Soil ThermometerDigital Temperature Controller for Heat Mat

    $117.71

    $11.56

    $37.75

     
    Double Down Gal Double Down Qt Double Up Gal
    Double Down GalDouble Down QtDouble Up Gal

    $19.39

    $9.23

    $20.69

     
    Double Up Quart Earth Juice Natural Up, 10 lb Earth Juice Natural Up, 1lb.
    Double Up QuartEarth Juice Natural Up 10 lbsEarth Juice Natural Up 1lb

    $9.23

    $59.57

    $8.78

     
    Earth Juice Natural Up, 2lbs. Earth Juice Natural Up, 30 lb EC Solution 1413
    Earth Juice Natural Up 2lbsEarth Juice Natural Up 30lbsEC Solution 1413

    $15.63

    $161.75

    $0.80

     
    EC/TDS/Temp Waterproof Hydro Tester EC65 Waterproof Tester EC66 Waterproof Tester
    EC/TDS/Temp Waterproof Hydro TesterEC65 Waterproof TesterEC66 Waterproof Tester

    $38.36

    $64.76

    $64.76

     
    Eco Tester TDS High Eco Tester TDS Low Electrode Cleaner 16 oz
    Eco Tester TDS HighEco Tester TDS LowElectrode Cleaner 16 oz

    $67.96

    $67.96

    $15.96

     
    Electrolyte Solution Essentials Calibration 8oz 4.01 Essentials Calibration 8oz 7.0
    Electrolyte SolutionEssentials Calibration 8oz 4.01Essentials Calibration 8oz 7.0

    $45.71

    $6.20

    $6.20

     
    Essentials Calibration Qt 4.01 Essentials Calibration Qt 7.0 Essentials pH Down Gal
    Essentials Calibration Qt 4.01Essentials Calibration Qt 7.0Essentials pH Down Gal

    $15.57

    $15.57

    $19.99

     
    Essentials pH Down Qt Essentials pH Up Gal Essentials pH Up Pt
    Essentials pH Down QtEssentials pH Up GalEssentials pH Up Pt

    $8.25

    $20.60

    $5.85

     
    Essentials pH Up Qt Gro'chek replacement probe for HI9813-6 Gro1 Digital Weather Station (non-wireless)
    Essentials pH Up QtGro'chek replacement probe for HI9813-6Gro1 Digital Weather Station (non-wireless)

    $8.44

    $111.16

    $14.99

     
    GroChek EC Electrode GroChek EC Tester GroChek Hanna pH Indicator
    GroChek EC ElectrodeGroChek EC TesterGroChek Hanna pH Indicator

    $46.36

    $92.76

    $95.96

     
    GroChek pH & TDS Combo Continuous Reading Meter GroChek pH/EC/TDS/C Portable Meter w/ Cal Check GroChek pH/EC/TDS/C Portable Meter w/ Cal Check
    GroChek pH & TDS Combo Continuous Reading MeterGroChek pH/EC/TDS/C Portable Meter w/ Cal CheckGroChek pH/EC/TDS/C Portable Meter w/ Cal Check

    $168.76

    $227.16

    $227.16

     
    GroChek pH/EC/TDS/Temp. Combo GroChek replacement probe for HI9813 GroChek replacement probe for HI9813-0
    GroChek pH/EC/TDS/Temp. ComboGroChek replacement probe for HI9813GroChek replacement probe for HI9813-0

    $197.56

    $104.21

    $123.96

     
    Grochek Replacement Probe for HI9813-5 & HI9813-5N Hanna PH Kit for Hydroponics Hydroponic H2O Conditioner: Dechlorine & Detoxifies
    Grochek Replacement Probe for HI9813-5 & HI9813-5NHanna PH Kit for HydroponicsHydroponic H2O Conditioner: Dechlorine & Detoxifies

    $101.96

    $36.70

    $17.21

     
    Kick Start Clone Solution Qt Lacrosse Wireless Weather Station Life Cloning Solution 2.5 gal
    Kick Start Clone Solution QtLacrosse Wireless Weather StationLife Cloning Solution 2.5 gal

    $11.20

    $27.98

    $104.96

     
    Life Cloning Solution 32 oz Life Cloning Solution gal MA 850 Replacement probe for SM801/802
    Life Cloning Solution 32 ozLife Cloning Solution galMA 850 Replacement probe for SM801/802

    $17.21

    $52.46

    $89.96

     
    Milwaukee EC hand meter SM301 Milwaukee pH - EC - TDS KIT Milwaukee PH Hand Meter Accuracy 0.1
    Milwaukee EC hand meter SM301Milwaukee pH - EC - TDS KITMilwaukee PH Hand Meter Accuracy 0.1

    $80.36

    $196.75

    $91.08

     
    Milwaukee pH hand meter SM101 Milwaukee TDS - PPM Monitor Milwaukee Waterproof PH Tester
    Milwaukee pH hand meter SM101Milwaukee TDS - PPM MonitorMilwaukee Waterproof PH Tester

    $94.46

    $97.96

    $62.21

     
    Mini pH Controller Nutradip Grow Boss Nutradip PH AC/DC Combo Meter
    Mini pH ControllerNutradip Grow BossNutradip PH AC/DC Combo Meter

    $149.76

    $215.96

    $93.71

     
    Nutradip PPM AC/DC Combo Meter Oakton Low/High/EC High Replacement Sensor Oakton pHTestr 10 - .1 pH Accuracy ATC*
    Nutradip PPM AC/DC Combo MeterOakton Low/High/EC High Replacement SensorOakton pHTestr 10 - .1 pH Accuracy ATC*

    $93.71

    $53.21

    $123.71

     
    Oakton pHTestr 20 - .01 pH Accuracy *ATC Oakton pHTestrs replacement sensor Oakton Replaceable Electrodes pH WP 2 Pen
    Oakton pHTestr 20 - .01 pH Accuracy *ATCOakton pHTestrs replacement sensorOakton Replaceable Electrodes pH WP 2 Pen

    $120.76

    $89.96

    $63.16

     
    Oakton Waterproof EC Tester 11+ Oakton Waterproof TDS Tester11+ Oakton WP EC Tester 11
    Oakton Waterproof EC Tester 11+Oakton Waterproof TDS Tester11+Oakton WP EC Tester 11

    $122.21

    $119.96

    $104.96

     
    Oakton WP TDS Tester 11 ORP Test Solution 240 mV @20°C pH 4.0 Calibration Sol 250 ml
    Oakton WP TDS Tester 11ORP Test Solution 240 mV @20°CpH 4.0 Calibration Sol 250 ml - case of 6

    $111.96

    $23.97

    $39.16

     
    pH 4.0 Calibration Sol 500ml pH 4.01 Calibration Solution 1 qt pH 4.01 Calibration Solution 8 oz
    pH 4.0 Calibration Sol 500ml - case of 6pH 4.01 Calibration Solution 1 qtpH 4.01 Calibration Solution 8 oz

    $52.76

    $17.54

    $6.36

     
    pH 7.0 Calibration Sol 250 ml pH 7.0 Calibration Sol 500 ml pH 7.0 Calibration Solution 1 qt
    pH 7.0 Calibration Sol 250 ml - case of 6pH 7.0 Calibration Sol 500 ml - case of 6pH 7.0 Calibration Solution 1 qt

    $44.96

    $51.99

    $17.21

     
    pH 7.0 Calibration Solution 8 oz pH 7.01 Calibration Sol. 25x20 pH Combination Electrode
    pH 7.0 Calibration Solution 8 ozpH 7.01 Calibration Sol. 25x20 - case of 25pH Combination Electrode

    $7.45

    $29.96

    $63.96

     
    pH Combo Electrode Glass Body pH Control Kit pH Controller 115V
    pH Combo Electrode Glass BodypH Control KitpH Controller 115V

    $154.36

    $15.96

    $156.76

     
    PH Controller Sampling Kit pH Down 32oz pH Down Gal
    PH Controller Sampling KitpH Down 32ozpH Down Gal

    $59.96

    $23.96

    $47.96

     
    pH Down 16 oz pH Down Acid 8oz pH Down Acid Gallon
    pH Down 16 ozpH Down Acid 8oz - case of 12pH Down Acid Gallon

    $15.96

    $75.96

    $20.16

     
    pH Down Acid Quart pH Down Dry 16lbs. Acid pH Down Dry 2.2lbs. Acid
    pH Down Acid Quart - case of 12pH Down Dry 16lbs. AcidpH Down Dry 2.2lbs. Acid

    $103.96

    $51.60

    $13.94

     
    PH Down Gal PH Down Qt pH Down, 1 lt
    PH Down Gal - case of 4PH Down QtpH Down, 1 lt

    $87.96

    $9.56

    $10.73

     
    pH Down, 10 lt pH Down, 4 lt pH Electrode Probe w/ 2m (6.6') Cable for HI981404N & H
    pH Down, 10 ltpH Down, 4 ltpH Electrode Probe w/ 2m (6.6') Cable for HI981404N & H

    $38.62

    $21.48

    $49.46

     
    pH Monitor / Hi-Lo User Select Alarm ph Replacement Electrode pH Replacement Electrode for Combo & pH Meter
    pH Monitor / Hi-Lo User Select Alarmph Replacement ElectrodepH Replacement Electrode for Combo & pH Meter

    $113.56

    $29.96

    $56.00

     
    pH Soil Meter pH Test Indicator 8 oz pH Test Kit (12/cs)
    pH Soil MeterpH Test Indicator 8 ozpH Test Kit (12/cs)

    $363.96

    $9.70

    $4.64

     
    pH Test Kit, 1 oz PH Tester for Hydroponics PH Tester w/1 Point Manual Cal
    pH Test Kit, 1 ozPH Tester for HydroponicsPH Tester w/1 Point Manual Cal

    $7.45

    $47.21

    $29.96

     
    pH Tester With 1 Point Manual Calibration pH Up 2.5 Gal pH Up 32oz
    pH Tester With 1 Point Manual CalibrationpH Up 2.5 GalpH Up 32oz

    $33.71

    $67.46

    $23.96

     
    pH Up 8oz Base pH Up Base Quart pH Up Dry 16lbs. Base
    pH Up 8oz Base - case of 12pH Up Base QuartpH Up Dry 16lbs. Base

    $75.96

    $8.07

    $84.80

     
    pH Up Dry 2.2 lbs Base pH Up Gal PH Up Gal
    pH Up Dry 2.2 lbs BasepH Up GalPH Up Gal - case of 4

    $11.25

    $47.96

    $91.96

     
    PH up Gallon PH Up Qt pH UP, 1 lt
    PH up GallonPH Up QtpH UP, 1 lt

    $20.16

    $8.96

    $10.73

     
    pH UP, 10 lt pH UP, 4 lt pH Up16 oz
    pH UP, 10 ltpH UP, 4 ltpH Up16 oz

    $42.71

    $20.21

    $14.96

     
    pH/EC Controller System PH/EC/TDS/C Portable Meters PH/ORP Storage Solution
    pH/EC Controller SystemPH/EC/TDS/C Portable MetersPH/ORP Storage Solution

    $2,396.00

    $195.96

    $7.45

     
    PH/Temp Probe for pH55 & pH56 PH/Temperature Meter PH4 Calibration Solution, 16 oz
    PH/Temp Probe for pH55 & pH56PH/Temperature MeterPH4 Calibration Solution, 16 oz

    $44.96

    $56.21

    $18.71

     
    PH4 Solution 20ml PH4 Solution, 220ml PH7 Calibration Solution, 16 oz
    PH4 Solution 20mlPH4 Solution, 220mlPH7 Calibration Solution, 16 oz

    $0.75

    $9.70

    $18.71

     
    PH7 Solution 20ml PH7 Solution, 220ml pHep Tester
    PH7 Solution 20ml PH7 Solution, 220mlpHep Tester

    $22.46

    $11.20

    $59.96

     
    pHTestr 30 - .01 pH Accuracy Temperature Display Prestige PPM/EC/CF Wand Primo TDS Tester
    pHTestr 30 - .01 pH Accuracy Temperature DisplayPrestige PPM/EC/CF WandPrimo TDS Tester

    $131.96

    $74.96

    $37.46

     
    Pro pH Down Quart Probe pH Electrode Pur Gro pH Probe Indst. Repl
    Pro pH Down QuartProbe pH ElectrodePur Gro pH Probe Industrial Replacement

    $7.12

    $59.96

    $111.71

     
    Rapitest Digital 3-Way Analyzer Rapitest Digital Soil Test Kit Rapitest Electronic 4-Way Tester
    Rapitest Digital 3-Way AnalyzerRapitest Digital Soil Test KitRapitest Electronic 4-Way Tester

    $33.71

    $29.96

    $27.71

     
    Rapitest pH Soil Tester Rapitest Soil Test Kit Replacement pH Sensor PH-200
    Rapitest pH Soil TesterRapitest Soil Test KitReplacement pH Sensor PH-200

    $6.70

    $14.57

    $44.96

     
    Replacement Platinum Sensor COM-100 Replacement probe for HI9026 Replacement Probe for MW801 & MW802 ONLY
    Replacement Platinum Sensor COM-100Replacement probe for HI9026Replacement Probe for MW801 & MW802 ONLY

    $29.96

    $89.96

    $89.96

     
    Replacement Sensor Salinity (NaCI) Calibration solution 30g-l. Smart 3 in 1 Continuous Monitor/Portable Meter
    Replacement SensorSalinity (NaCI) Calibration solution 30g-l.Smart 3 in 1 Continuous Monitor/Portable Meter

    $89.96

    $29.96

    $224.96

     
    Smart 3 in 1 Meter w/ pH/EC/TDS Soil Conductivity/Salinity Meter w/ Carrying Case Solution Starter Kit (PH & Cleaning)
    Smart 3 in 1 Meter w/ pH/EC/TDSSoil Conductivity/Salinity Meter w/ Carrying CaseSolution Starter Kit (PH & Cleaning)

    $206.21

    $524.96

    $18.71

     
    Solution Starter Kit (PH, TDS & Cleaning) SPO Dry Temperature Probe w/ 6ft cord SPO EC/TDS Probe for HI981409 & HI981410
    Solution Starter Kit (PH, TDS & Cleaning)SPO Dry Temperature Probe w/ 6ft cordSPO EC/TDS Probe for HI981409 & HI981410

    $18.71

    $7.46

    $67.46

     
    Storage Solution, 16 oz TDS-3 Handheld TDS meter
    Storage Solution, 16 ozTDS Solution 1382TDS-3 Handheld TDS meter

    $18.71

    $0.75

    $27.75

     
    Tri Calibration kit PPM/EC, pH 4, pH 7 500ml Water Conditioner/Purifier 1 Quart Size Waterproof Eco Tester pH1
    Tri Calibration kit PPM/EC, pH 4, pH 7 500mlWater Conditioner/Purifier 1 Quart SizeWaterproof Eco Tester pH1

    $18.71

    $33.75

    $60.00

     
    Waterproof EcoTster pH2 Waterproof PC Testr 35 (EC & pH) Waterproof pH/Temperature Meter
    Waterproof EcoTster pH2Waterproof PC Testr 35 (EC & pH)Waterproof pH/Temperature Meter

    $75.00

    $150.00

    $90.00

     
    Waterproof PT Testr 35 (pH & TDS) WM pH TDS Cntrl. 15 VAC X Nutrients pH Down 1 Gallon
    Waterproof PT Testr 35 (pH & TDS)WM pH TDS Cntrl. 15 VACX Nutrients pH Down 1 Gallon

    $150.00

    $588.75

    $20.25

     
    X Nutrients pH Down 1 Quart X Nutrients pH Up 1 Gallon GL Green Planet - pH Down - 1L
    X Nutrients pH Down 1 QuartX Nutrients pH Up 1 GallonGL Green Planet - pH Down - 1L

    $8.25

    $20.25

    $19.48

     
    Green Planet - pH Down - 4L Green Planet - pH UP - 1L Green Planet - pH Up - 4L
    Green Planet - pH Down - 4LGreen Planet - pH UP - 1LGreen Planet - pH Up - 4L

    $52.49

    $19.48

    $52.49

     
    Mad Farmer Get Down 1qt Mad Farmer Get Up 1qt X Nutrients pH Down 1qt
    Mad Farmer Get Down 1qtMad Farmer Get Up 1qtX Nutrients pH Down 1qt

    $9.74

    $9.74

    $9.75

     
    X Nutrients pH Down 1gal X Nutrients pH up 1gal X Nutrients pH Up 1qt
    X Nutrients pH Down 1gal X Nutrients pH up 1gal X Nutrients pH Up 1qt

    $21.75

    $21.75

    $9.75