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 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™ technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used. | | Item # | Description | Price | Add to Cart |
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| 722035 | PH 7.01 CAL SOLUTION QUART | $21.50 | Add to Cart | | 722030 | PH 7.01 CAL SOLUTION 8OZ | $7.54 | Add to Cart | | 722015 | PH 4.01 CAL SOLUTION 8OZ | $7.54 | Add to Cart | | 722005 | 1500 PPM REFERENCE SOLUTION 8OZ | $8.20 | Add to Cart | | 722020 | PH 4.01 CAL SOLUTION QUART | $21.50 | Add to Cart |
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Smart Pots |
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SMART POTS - NEW ITEM!
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Gardening Indoors with So... |
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This fifth edition of Gardening Indo... |
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