Ammonia Aqua Sensor

Pacific Sentry's ammonia aqua sensor enables visual monitoring of toxic ammonia (NH3) in aquaria water on a continuous basis. Simply attach it in a visible location where it can be left and easily viewed, with the sensor pad completely immersed. With initial use, wait about 15 minutes for the sensor to hydrate before making first reading. Thereafter they respond quickly (1-5 minutes) to NH3. To get a measurement, simply match the sensor's color to the color-gradient indicator chart to readout the NH3 concentration.