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GroStar pH Probe Maintanence Kit

In Stock: 82

$20.15 $23.99 -16%

GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen

In Stock: 159

$150.35 $178.99 -16%

GroStar GS2 Soil pH Pen

In Stock: 141

$215.87 $256.99 -16%

GroStar GS3 EC Pen

In Stock: 88

$95.75 $113.99 -16%

GroStar pH calibration kit (pH 4/7, 8 oz. each)

In Stock: 38

$15.95 $18.99 -16%

GroStar GS1 pH Pen

In Stock: 269

$100.45 $115.99 -13%

GroStar GS4-E replacement pH/EC combo electrode

In Stock: 83

$67.19 $79.99 -16%

GroStar GS2-E replacement Soil Spear pH electrode

In Stock: 101

$152.87 $181.99 -16%

GroStar pH calibration kit (pH 4/7/10, 8 oz. each)

In Stock: 19

$24.35 $28.99 -16%

GroStar GS1-E replacement pH electrode

In Stock: 101

$42.83 $50.99 -16%

GroStar GS3-E replacement EC electrode

In Stock: 101

$45.35 $53.99 -16%

GroStar EC Calibration Kit (2.77 EC, 8 oz. each)

In Stock: 81

$12.59 $14.99 -16%