Parts Per Million (PPM) parts per million (ppm) Parts Per Million (PPM) is a unit of measurement to determine how many Total Dissolved Solids (TDS) are in the water you feed your plants. It is a way to assess how many nutrients are in the water.Testing PPM and EC Related Terms EC / TDS / pH level << Back to Glossary Related Posts:Why is Cannabis Legal in Some parts of US but Banned…Man Tries to Smuggle 1-Million Worth of Cannabis…Dog Sniffs Out £1 Million Worth of Cannabis PlantsCannabis Drugs Bust Worth $23 Million in QueenslandPolice in Dublin have confiscated cannabis valued at…Oregon State University Receives $10 Million for Hemp Market
