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pH / TDS Meter Calibration Solutions
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Suggested Retail: $9.40
Sale Price: $7.63
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General Hydroponics pH 4.01 Calibration Solution 8 oz - General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics... Read More
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370
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Suggested Retail: $9.40
Sale Price: $7.63
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General Hydroponics pH 7.01 Calibration Solution 8 oz - General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics... Read More
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373
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Suggested Retail: $10.23
Sale Price: $8.30
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General Hydroponics 1500 PPM Reference Solution 8 oz - General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics... Read More
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376
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Suggested Retail: $26.82
Sale Price: $21.74
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General Hydroponics pH 4.01 Calibration Solution Quart - General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics... Read More
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3615
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Suggested Retail: $26.82
Sale Price: $21.74
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General Hydroponics pH 7.01 Calibration Solution Quart - General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics... Read More
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3616
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