pH Buffer Powder Calibration Solution Kit 4.01 7.00 10.01 pH Calibration Packets for Digital pH Meter, Accurate Water Tester Calibration for Hydroponics, Aquarium, and Pool

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Universal 3-Point Calibration Set: Includes 3 high-precision pH buffer packets: pH 4.01, pH 7.00, and pH 10.01. Standardized to provide laboratory-grade accuracy for any digital pH meter, pen, or probe. Pre-Measured for Accuracy: Eliminate measuring errors and messy liquids. Each individual sachet is precisely pre-measured to create exactly 250ml of solution. Simply mix with distilled water for a fresh, stable calibration batch every time. Long-Term Shelf Stability: Unlike liquid buffers that can degrade after opening, these airtight powder packets are designed for extended shelf life. Perfect for keeping on hand for occasional testing without worrying about rapid expiration. Simple 3-Step Procedure: Clear, easy-to-follow mixing instructions are printed directly on the back of every packet. Ideal for beginners and professionals alike, ensuring a hassle-free calibration process in minutes. Wide Application Range: An essential tool for maintaining water quality across hydroponics, aquariums, swimming pools, and home laboratory testing. Ensure your sensors are reading correctly to maintain the perfect environment for your needs.