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GroStar GS2 Soil pH Pen

In stock

$200.45 $256.99 -22%

GroStar GS2-E replacement Soil Spear pH electrode

In stock

$141.95 $181.99 -22%

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

Out of stock

$139.61 $178.99 -22%

Save 18%

GroStar GS1 pH Pen

In stock

$94.63 $115.99 -18%

GroStar GS3 EC Pen

Out of stock

$88.91 $113.99 -22%

GroStar GS4-E replacement pH/EC combo electrode

In stock

$62.39 $79.99 -22%

GroStar GS3-E replacement EC electrode

In stock

$42.11 $53.99 -22%

GroStar GS1-E replacement pH electrode

In stock

$39.77 $50.99 -22%

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

In stock

$22.61 $28.99 -22%

GroStar pH Probe Maintanence Kit

In stock

$18.71 $23.99 -22%

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

Out of stock

$14.81 $18.99 -22%

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

In stock

$11.69 $14.99 -22%