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GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
Regular price $178.99 USDRegular priceUnit price per -
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
Regular price $19.99 USDRegular priceUnit price per -
GroStar pH Probe Maintanence Kit
Regular price $23.99 USDRegular priceUnit price per -
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
Regular price $28.99 USDRegular priceUnit price per -
GroStar GS3-E replacement EC electrode
Regular price $53.99 USDRegular priceUnit price per -
GroStar GS2-E replacement Soil Spear pH electrode
Regular price $181.99 USDRegular priceUnit price per -
Sold outGroStar GS1 pH Pen
Regular price $115.99 USDRegular priceUnit price per
