General Hydroponics pH 4.01 Calibration Solution, Quart

★★★★★ 4.6 72 reviews

US$5.60
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US$5.60
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Product details

Management number 250711851 Release Date 2026/09/17 List Price US$5.60 Model Number 250711851
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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.

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4.6 out of 5
★★★★★
72 ratings | 30 reviews
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