Q. What is the correct unit for measuring nutrients in hydroponics nutrient solution?
A) Parts per million
B) Parts per thousand
C) Parts per trillion
D) Parts per gazillion
Explanation
ppm is a common unit for measuring the concentrations of elements in the nutrient solution. One ppm is one part by weight of the mineral in one million parts of solution. It is also equivalent to 1 mg of something per litre of water
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.