pH, EC, PPM Meters

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  1. GroStar pH calibration kit (pH 4/7, 8 oz. each)
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  2. GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
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  3. GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
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  4. GroStar GS3-E replacement EC electrode
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  5. GroStar GS2-E replacement Soil Spear pH electrode
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  6. GroStar GS1-E replacement pH electrode
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  7. GroStar pH Probe Maintanence Kit
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  8. GroStar GS4-E replacement pH/EC combo electrode
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  9. GroStar GS2 Soil pH Pen
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  10. GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
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  11. GroStar GS3 EC Pen
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  12. GroStar GS1 pH Pen
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