Perform hands-on experiments in biology, chemistry, physiology, life science and more with this lightweight, compact unit. With this complete system, students can measure and analyze data models for a variety of standards-based topics including skin temperature, pulse rates, sweat production, photosynthesis, change in matter, pH titration, and much more. Icon-based design and large graphical LCD screen make this system easy for students to understand and use. Unit has a 128k sample memory and 24k/sec sampling rate, 12-bit sampling resolution, and long-lasting 150 hour battery life. Includes Ward's DataHub Software, AC/DC adapter, Quick Start Guide, and USB cable. Accessories included with this unit include the Conductivity Electrode, External Temperature Probe, Ear Clip, Colorimeter/Turbidity Cuvettes, Air Pressure Extension Tube, plastic rod, stand, and screw, and pH Electrode. Compatible with PC/Mac and iPad.

I am very flexible on the price and will be willing to negotiate....