The Quantek Model 905 is a benchtop, portable oxygen analyzer used primarily for the measurement of residual oxygen in gas-flushed food packages. The Model 905 is used for the measurement of residual oxygen in food packages. With an expected oxygen sensor life of 4-5 years, it vastly outperforms other oxygen analyzers with a cheap sensor that might last 1-2 years. Use it in the lab, or on the packaging line. While the performance and functionality is the same as our Model 901, the Model 905 is the better choice for conducting testing when the operator is stationary. This is primarily due to its tip up feet, and form factor. Also, its high end rugged metal enclosure ensures its overall durability.