ESSENTIALS pH Test Kit
These easy-to-use pH test kits are ideal for all levels of gardener.
The kits work by adding a small ammount of the nutrient solution to the provided vial & adding 3 drops of the test solution & mixing. You then just match the colour to the provided chart, easy!
This is a wide spectrum pH test indicator that measures between pH 4.0 & 8.5 and will last for over 200+ tests, making it very economical.