Multifunction pHEC Meter Provides Laboratory Accuracy In A Durable In-Field Model. It measures both pH and EC in water, soil, nutrient solutions and more with laboratory accuracy. The waterproof design and the shock-and break-resistant pH electrode make it ideal for use in wet weather and severe environments. The pH electrode is covered with a durable film that protects it even if dropped. It includes meter, pH and conductivity electrodes, pH 4 & 7 calibration standards, 1.41 mS EC standard and one 9-volt battery.