The Growth Technology pH Buffer 4pH Meter Calibration Fluid is a 0.3 L liquid solution used for calibrating pH meters in hydroponic systems. This pH calibration solution is ready for use and comes in a bottle packaging. With a mineral-based composition, it is designed for all-purpose plant types and has an expiry date of 2025. Made in the United Kingdom by Growth Technology, this 300ml pH calibration fluid is essential for maintaining accurate pH levels in hydroponic setups. See picture
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