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Growth Technology pH Test Kit 20ml Growth Technology Liquid pH Test Kit is a simple to use universal pH Test Kit which can be used to check the pH in your hydroponic nutrient tank. The kit comes with a test vial, test liquid, universal colour chart and full instructions. The Liquid pH Test Kit works by changing the colour of the water sample in relation to the pH level. You simply add one drop of test liquid to a sample of the nutrient solution, shake the vial then just compare the colour of the sample to the enclosed colour chart to determine the pH. The Liquid pH Test Kit is very cost effective and should last for around 400 pH Tests.
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