Bluelab pH Buffer 4 (250ml) provides a stable, standardized solution at pH 4.00 for calibrating pH meters, pens, and probes. Essential for accurate pH measurement in hydroponic nutrient solutions, aquariums, and water quality applications. This buffer maintains consistent pH levels during calibration, ensuring precise readings for optimal system performance. NIST traceable standards guarantee laboratory-grade reliability. Usage: Rinse probe with distilled water, immerse in buffer, and adjust meter to display 4.00. Replace buffer after opening and store sealed in a cool, dark location to preserve stability. Color-coded bottle aids quick identification.
Ph buffer 4 – bluelab – 250ml
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