Flairform pH Test Kit

Electronic pH meters are the standard tool for monitoring nutrient solution pH, but they are susceptible to probe drift, electrode contamination, and calibration error, particularly when lower-quality electrodes respond to sodium and other ions in the solution rather than hydrogen alone. A colorimetric pH test kit provides a reliable independent reference point for cross-checking meter readings, and a straightforward backup option when a meter is unavailable, out of calibration, or out of battery.

The Flairform pH Test Kit covers a range of 4.5 to 9.0, encompassing the full working range of hydroponic nutrient solutions. One to two drops per test yields a clear colour result, with a waterproof colour chart printed directly on the side of the bottle for immediate comparison without a separate reference card. A sturdy test tube is included. At one to two drops per test, the 30ml bottle delivers up to 800 tests. Simple, reliable, and practical to keep on hand as a secondary verification tool in any hydroponic setup.