pH Test KIT 30ml for checking the pH of nutrient solution. Fill the test tube halfway with the mixed nutrient solution, add two drops, and the color will tell you the pH value. This 30ml KIT lasts for approximately 500 tests. Volume in L50 L if 2 pcs appear in the order, it must be counted as two packages Non-soil, coconut, inert, organic substrates for growing plants. Coconut substrate from top-quality coconut fibers.
