Essentials LAB pH test indicator - wide spectrum (4.0 - 8.5)

These cost-effective and easy-to-use pH test indicators give a quick reading of the pH of your nutrient solution.

ESSENTIALS pH Test Indicator – Wide Spectrum, change colour in response to different pH values. Fill the supplied plastic vial with a small amount of your nutrient solution and add a few drops of the pH test Indicator reagent. Compare the resulting colour to the chart provided and read the estimated pH. Although not as accurate as using a pH meter to analyse your nutrient solution, this indication kit is a quick, precise and cost-efficient measure, giving over 100 readings. It is also ideal as a backup solution in the case your pH meter should stop working.