Complete pH testing and Adjustment Kit with Vitalink pH Up & pH Down - Hydroponic Testing Equipment

To use: Simply fill the supplied test tube halfway with nutrient solution, add two drops of pH Test Indicator, shake and compare the resulting colour with the chart to read your pH level.

Then use your Vitalink pH up or pH down to get the desired pH that you require.

For full technical specs on the Terra Aquatica liquid pH tester please click this link.