Battery-operated, portable analyzer for measuring oxygen and carbon dioxide.

Model 902D DualTrak is a battery-operated, portable analyzer for measuring oxygen and carbon dioxide in gas-flushed food packages. Both oxygen and carbon dioxide are measured at the same time, on the same sample, with no sample preparation or manual injection required. A built-in miniature pump draws sample through the sample probe into the sensors, where it is measured in seconds and the results displayed on the front panel. Gas measurements range from 0.1 percent to 100 percent. The lightweight unit can be easily moved.

Quantek Instruments, 225 Crawford St., Northboro, MA 01532. Tel. (508) 393-5533.