pH Buffer 4.0 & 7.0 Calibration Solution 250ml - Nutrifield Ensure accurate pH readings with this Nutrifield calibration solution pack. Designed to keep your pH meter properly calibrated for reliable hydroponic nutrient management. pH Buffer 4.0 & 7.0 Calibration Solution 250ml - Nutrifield Accurate calibration for pH meters at 4.0 and 7.0 Two 250ml bottles for regular testing and maintenance Essential for maintaining correct nutrient solution pH Supports optimal mineral absorption in hydroponic systems Ideal for weekly and monthly calibration checks Easy-to-use solution – pour, calibrate, discard after use Premium quality Quick Australia-Wide Shipping Trusted by off-grid enthusiasts across Australia Package Contents: 1x Nutrifield pH 4.0 buffer - 250ml 1x Nutrifield pH 7.0 buffer - 250ml
