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Labmate Ozone Tester features an electrochemical sensor capable of measuring ozone concentrations from 0 ppm to 5 ppm. It boasts a memory capacity of 16,000 samples and operates within a humidity range of 0% to 100% RH and a temperature range of -40°C to 120°C. The device includes a 2.6-inch IPS color screen for digital display of ozone levels and is equipped with a built-in suction pump for micro-negative-pressure operation.