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GroStar GS2 Soil pH Pen

In Stock: 141

$212.78 $256.99 -17%

GroStar GS2-E replacement Soil Spear pH electrode

In Stock: 101

$150.68 $181.99 -17%

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

In Stock: 200

$148.20 $178.99 -17%

GroStar GS1 pH Pen

In Stock: 285

$98.99 $115.99 -15%

GroStar GS3 EC Pen

In Stock: 99

$94.38 $113.99 -17%

GroStar GS4-E replacement pH/EC combo electrode

In Stock: 89

$66.23 $79.99 -17%

GroStar GS3-E replacement EC electrode

In Stock: 100

$44.70 $53.99 -17%

GroStar GS1-E replacement pH electrode

In Stock: 101

$42.21 $50.99 -17%

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

In Stock: 24

$24.00 $28.99 -17%

GroStar pH Probe Maintanence Kit

In Stock: 89

$19.86 $23.99 -17%

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

In Stock: 45

$15.72 $18.99 -17%

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

In Stock: 118

$12.41 $14.99 -17%