Bluelab pH 4.0 Calibration Solution | 250ml pH Meter Calibration Fluid oversized With a balanced NPK of

With a balanced NPK of A: 4-0-1 and B: 0-4-2

These amino acids are used for the production of a large number of important growth factors

Maintains clean pumps

and indoor setups

healthy shoots and lush green growth

Bluelab pH 4.0 Calibration Solution | 250ml pH Meter Calibration Fluid oversized With a balanced NPK ofBluelab pH 4. 0 Calibration Solution is a high quality reference solution designed to accurately calibrate all types of pH meters and pens. Regular calibration is essential for ensuring reliable pH readings, which are critical for healthy plant growth and nutrient uptake. This 250ml bottle provides growers with a professional standard solution trusted by hydroponic and horticultural growers worldwide. Key Benefits Provides an accurate reference point