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GroStar pH Probe Maintanence Kit

In Stock: 76

$20.00 $23.99 -17%

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

In Stock: 145

$149.27 $178.99 -17%

GroStar GS2 Soil pH Pen

In Stock: 114

$214.32 $256.99 -17%

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

In Stock: 117

$15.83 $18.99 -17%

GroStar GS1 pH Pen

In Stock: 264

$99.72 $115.99 -14%

GroStar GS3 EC Pen

In Stock: 93

$95.06 $113.99 -17%

GroStar GS4-E replacement pH/EC combo electrode

In Stock: 80

$66.71 $79.99 -17%

GroStar GS2-E replacement Soil Spear pH electrode

In Stock: 89

$151.77 $181.99 -17%

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

In Stock: 28

$24.17 $28.99 -17%

GroStar GS1-E replacement pH electrode

In Stock: 78

$39.26 $50.99 -23%

GroStar GS3-E replacement EC electrode

In Stock: 100

$45.02 $53.99 -17%

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

In Stock: 101

$12.50 $14.99 -17%