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Maintain precise accuracy of your Bluelab® pH meters and probes with Bluelab® pH 4.0 Calibration Solution. Specifically designed and manufactured to stringent laboratory standards, this solution ensures your Bluelab equipment delivers reliable, consistent readings, extending the life and effectiveness of your instruments. Regular calibration with Bluelab® pH 4.0 Solution is crucial for accurate pH measurement, empowering growers and gardeners with confidence in their nutrient management. Trust Bluelab® to keep your measurement tools operating at peak performance and your plants thriving.
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🇺🇸 Ship from USA · On Agora since 2026
$11.95