GroStar
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GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
$14.99 -
GroStar GS1 PH/Temp (2-IN-1) Pen
$115.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS1-E replacement pH electrode
$50.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS2 Soil PH/Temp (2-IN-1) Pen
$256.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS2-E replacement Soil Spear pH electrode
$181.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS3 EC/500ppm/700ppm/Temp (4-IN-1) Pen
$113.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS3-E replacement EC electrode
$53.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
$178.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar GS4-E replacement pH/EC combo electrode
$79.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar pH calibration kit (pH 4/7, 8 oz. each)
$18.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
$28.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026 -
GroStar pH Probe Maintanence Kit
$23.99Estimated delivery dates: Oct 8, 2026 - Oct 13, 2026