Calitech - Zero Oxygen Standard in Single-Use Pouches

A solution of ascorbate and sulfite formulated with anti-microbial. This solution provides a zero standard for proper and accurate calibration. Calibration with Calitech Zero-Oxygen Standard eliminates the errors from electrical (disconnect) zero calibration which arise from internal offsets in the electrode. Because the solution is fresh each time, the problems with homemade solution stability are eliminated.