Sodium Meters
Sodium (Na+) Ion Meters
Sodium is a problematic element in the soil. It is not an essential plant nutrient and it can displace potassium to be taken in by the plants and cause great damage to your crops. When measuring your soil extract for EC (electrical conductivity) it is a great idea to also measure the sodium levels of the extract to see how much of the EC is represented by essential plant nutrients and which is represented by destructive sodium ions.