A wireless data logger with a charge life of 150 hours, the BioChem combines two great scientific disciplines, catering to a multitude of experiments in the field, while the 128k-sample memory and 12-bit resolution also enable students to explore fast or long acting chemical, biochemical and biological phenomena in a clean and hazardous free science lab environment. Built-in sensors include:Air Pressure, Ambient Temperature, Barometric Pressure, Colorimeter, Conductivity, Dissolved Oxygen, External Temperature, GPS, Heart Rate, Light, pH, Relative Humidity, Thermocouple, Turbidity and Universal Input