Worth every penny. The unit is totally versatile and easy to use out of the box. Comes with factory calibration data and short concise instructions for use and calibration of each function. Allows for very precise measurement of nutrient solutions in parts per million, soil pH and temperature, water pH and temperature, and air temperature. I was very skeptical about purchasing this unit because of the price. But the unit is everything as advertised. Throw it in the bucket and get instant data. A serious unit for serious applications.
Rating: [5 of 5 Stars!]