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Showing 910–918 of 1965 results
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GroStar GS1-E replacement pH electrode
$50.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS2 Soil PH/Temp (2-IN-1) Pen
$256.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS2-E replacement Soil Spear pH electrode
$181.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS3 EC/500ppm/700ppm/Temp (4-IN-1) Pen
$113.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS3-E replacement EC electrode
$53.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
$178.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar GS4-E replacement pH/EC combo electrode
$79.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar pH calibration kit (pH 4/7, 8 oz. each)
$18.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026 -
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
$28.99Add to cartEstimated delivery dates: Jul 4, 2026 - Jul 9, 2026