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#HN-HDR958
BlueLab pH Meter with Probe
BlueLab pH Meter with Probe
 

Price:

$239.99

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#HN-HDR248
Oakton pH Tester - 20 - .01 pH Accuracy ATC
Oakton pH Tester - 20 - .01 pH Accuracy ATC
 

Price:

$222.99

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#HN-HDR957
BlueLab Combo Meter
BlueLab Combo Meter
 

Price:

$334.99

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7%
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#HN-HDR247
Oakton pH Tester - 10 - .1 pH Accuracy ATC
Oakton pH Tester - 10 - .1 pH Accuracy ATC
 

Price:

$209.99

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#HN-HDR956
Oakton pH Testers Replacement Sensor
Oakton pH Testers Replacement Sensor
 

Price:

$163.99

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#HN-HDR955
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#HN-HDR954
Waterproof EcoTester - pH2
Waterproof EcoTester - pH2
 

Price:

$149.99

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#HN-HDR948
Replacement Sensor
Replacement Sensor
 

Price:

$165.99

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#HN-HDR951
Milwaukee Waterproof PH Tester
Milwaukee Waterproof PH Tester
 

Price:

$134.99

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#HN-HDR910
Probe pH Electrode
Probe pH Electrode
 

Price:

$122.99

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#HN-HDR934
Guardian Monitor
Guardian Monitor
 

Sale Price:

$300.00

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#HN-HDR253
BlueLab Guardian Monitor Power Supply
BlueLab Guardian Monitor Power Supply
 

Price:

$49.99

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#HN-HDR252
Soil pH Probe
Soil pH Probe
 

Price:

$124.99

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#HN-HDR251
pH Replacement Electrode for Combo & pH Meter
pH Replacement Electrode for Combo & pH Meter
 

Price:

$78.99

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#HN-HDR250
pH Tester with 1 Point Manual Calibration
pH Tester with 1 Point Manual Calibration
 

Price:

$63.98

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#HN-HDR911
Soil pH Meter
Soil pH Meter
 

Sale Price:

$163.19

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46%
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#HN-HDR249
Waterproof PC Tester - 35 - EC & pH
Waterproof PC Tester - 35 - EC & pH
 

Price:

$152.99

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#HN-HDR949
General Hydroponics pH Control Kit
General Hydroponics pH Control Kit
 

Price:

$25.99

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#HN-HDR074
Oakton Waterproof EcoTester pH1
Oakton Waterproof EcoTester pH1
 

Sale Price:

$73.99

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18%
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#HN-HDR027
Waterproof pH/Temperature Meter
Waterproof pH/Temperature Meter
 

Sale Price:

$79.95

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60%
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#HN-HDR745
Hydrofarm Active Air 2-Way pH and Moisture Meter
Hydrofarm Active Air 2-Way pH and Moisture Meter
 

Price:

$19.99

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20%
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#HN-HDR082
Hydrofarm ActiveAir 3-Way pH with Light and Moisture Meter
Hydrofarm ActiveAir 3-Way pH with Light and Moisture Meter
 

Price:

$17.99

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28%
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#HN-HDR083
Batteries for pH/TDS Pen - 1.4v - Pack of 4
Batteries for pH/TDS Pen - 1.4v - Pack of 4
 

Price:

$17.99

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22%
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#HN-HDR586
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