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A high phosphorous mix of bat and seabird guano plus earthworm castings
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Teaming with Nutrients will open your eyes to the importance of understanding the role of nutrients in healthy
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pH Calibration Solution Kit 3 8 oz bottles pH 4/7/10 book A high phosphorous mix ofGroStar by Apera pH calibration kit (pH 4 7 10, 8 oz. each) Kit Includes: (x1) 8 oz. pH 4. 0 calibration solution (x1) 8 oz. pH 7. 0 calibration solution (x1) 8 oz. pH 10. 0 calibration solution pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings. High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25C (77F). ideal for the calibration of all pH meters Color coded,
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